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shamskhan6789 Tuesday, March 04, 2014 09:40 AM

Big bang : cosmic rays.
If u search bigbang sound on goolge, it simply shows "cosmic microwave background".
M I right??

mhz99 Tuesday, March 04, 2014 11:15 AM

Afterglow of big bang has been cooled by the expansion of the Universe to just 2.725 degree above absolute zero – the lowest possible temperature – so it appears not as visible light but stretched out into short-wavelength radio waves, principally microwaves.

MariaAli Thursday, March 06, 2014 07:01 PM

Where are the mcqs???

Adeel Ahmed Friday, March 07, 2014 12:30 PM

[QUOTE=MariaAli;702821]Where are the mcqs???[/QUOTE]



1. The echo of Big Bang can be heard in the
form of:
a. cosmic rays
b. gamma rays
c. microwave radio signals
d. infrared radiations
2. Omar Khyyam
was a:
a. poet
b. mathematician
c. astronomer
d. all of these
3. Who was the early dentist and also
inventor of
many
surgical instruments:
a. Avicenna
b. Al. zahrawi
c. Ibn .ul. haithem
d. Al . Jahiz
4. who was the first
Muslim
mathematician who used '' Zero '' :
a. Ibn. e. Baitar
b. Ibn. Rushd
c. Ibn. Al. Haitham
d
. Al Khwarizmi
5.
Why
some nebulae shine?
a)because they emit light
b)due to burning process
c)because they contain bright stars
d)because they reflect light
6.
A
shooting star is
a)sun
2
Mian Shafiq 0345
-
7773680. Contact for Everyday Science and forestry
b) a comet
c) a meteor
d) an asteroid
7. A 'clinical death' takes
place when:
a) there is no pulse
b) there is no heart beat
c)pupils are fixed and dilated and there is no reaction to light
d) all of above
8.
What
is Hubble Classification :
a. classification of stars
b. classification of planets
c. classification of gal
axies
d. classification of earth's zones
9. Sun rises in the east and sets in the west due
to the:
a. shape of earth
b. rotation of earth around the sun
c. rotation of earth on its axis
d. movement of the sun
10.
What
are
cyclones?
a. sudden heavy
floods
b. no rain for a long period
c. heavy showers
d. violent wind and rain
11. From ecological point of view human beings are
taken as:
a. decomposers
b.
consumers’
c. producers
d. All of these
12. The major cause of land pollution is:
a) pesticides
b) chemical fertilizers
c) insecticides
d) all of these


b) a comet
c) a meteor
d) an asteroid
7. A 'clinical death' takes
place when:
a) there is no pulse
b) there is no heart beat
c)pupils are fixed and dilated and there is no reaction to light
d) all of above
8.
What
is Hubble Classification :
a. classification of stars
b. classification of planets
c. classification of gal
axies
d. classification of earth's zones
9. Sun rises in the east and sets in the west due
to the:
a. shape of earth
b. rotation of earth around the sun
c. rotation of earth on its axis
d. movement of the sun
10.
What
are
cyclones?
a. sudden heavy
floods
b. no rain for a long period
c. heavy showers
d. violent wind and rain
11. From ecological point of view human beings are
taken as:
a. decomposers
b.
consumers’
c. producers
d. All of these
12. The major cause of land pollution is:
a) pesticides
b) chemical fertilizers
c) insecticides
d) all of these
3

13.
The
sharp
-
bitter taste of unripe fruits is due to high concentration of:
a)phenolic compounds
b)volatile compounds
c)organic acids
d)starch
14. The use of antibiotic is a very effective way of killing disease causing bacteria.
Sometime
people don't finish all of their pills. this can result in:
a) some bacteria left unkilled
b) production of more bacteria
c) bacteria becoming sensitive to anti
biotics
d) bacteria becoming resistant to antibiotics
15. Flesh eaters are called:
a)omnivores
b) carnivores
c) herbivores
d) scavengers
16. Chromosomes are made up of:
a) DNA only
b) DNA & RNA
c) Proteins only
d) DNA, RNA & Proteins
17.
Plants
can be made disease resistant by:
a)heat Treatment
b)hormone treatment
c)colchicine treatment
d)breeding with their wild relatives
18. Important ingredient used in vicks vapor rub is obtained from the plant:
a) Cinamomum camphora
b) cinamomum zelamicum
c)
Curaima longa
d) All of these
19. Which of the following is both endocrine and exocrine gland:
a) thyroid
b) pancreas

c) parathyroid
d) all of these
20. The process by which small amount of impurities are added into a
semiconductor is called:
a) addition
b) conduction
c) doping
d) insulating
21. Which of the following is a semiconductor?
a) Mercury
b) magnesium
c) silver
d) none of these
22. Silver fish belongs to:
a) fish
b) insect
c) reptile
d) amphibian
23. Satiety is the condition in which patient lacks desire to:
a. drink
b. eat
c. sleep
d. talk
24. Function of iron in our
body is:
a. provide strength
b. oxygen transport
c. help in hydrolysis
d. breakdown fats
25. The non
-
communicable disease
is called:
a. Endemic
b. Acute
c. Chronic
d. Innate

26. Vitamins A,D,E and K are called:
a. water soluble vitamins
b. primary vitamins
c. basic vitamins
d. fat soluble vitamins
27. Which is not a function of HCL
in stomach:
a. softening fibrous food
elements
b. promoting formation of pepsin
c. killing bacteria ingested with food and drink
d. breakdown proteins into peptones
28. The sum of the kinetic energy and potential energy of an oscillating body is
a. maximum in the beginning
b. constant at al
l points
c. maximum at midway of the path
d. minimum in the beginning
29. Which term in psychology is generally used to refer to emotional disorders
such as,
anxiety,
depression
and phobia:
a.
psyches
b. hypnosis
c. neurosis
d. mental illness
30. All
Alkali metals react with water to form :
a. oxides
b. peroxides
c. hydroxides
d. hyper oxides
31. LASER is an
acronym for:
a. light amplification by standard emission of light
b. light absorption stimulated entrance of radiation
c. light amplification b
y stimulated emission of radiation
d. light absorption by standard emission of radiation
32. If carbon dioxide is passed through lime water for a long time , the cloudy
white colour (initially
formed ) disappears because of the formation of :
a. calcium bi
carbonate

b. calcium hydroxide
c. calcium carbonate
d. calcium sulphate
33.
Permanent
hardness of water is due to the presence of
a. calcium bicarbonate
b. magnesium bicarbonate
c. calcium sulphate
d. sodium bicarbonate
34. Articles made of copper and bro
nze slowly tarnish in air and turn green , the
green colour is due
to the formation of :
a. copper oxide
b. copper sulphide
c. copper oxalate
d. all of these
35. Bleaching powder losses its power on keeping for a long time because
a. it changes into calci
um hypochlorite
b. it changes into calcium chloride and calcium hydroxide
c. it absorbs moisture
d. it changes into calcium chloride and calcium chlorate
36. When the quantity of charge on each of the two bodies is
doubled,
the force
between them
becomes
a. one fourth
b. one half
c. twice
d. four times
37. Light year is
related to:
a. time
b. distance
c. energy
d. speed
38. The word
ceramic means:
a. hard material
b. soft material

c. dry material
d. burnt material
39. The operation of sola
r cell is based on
a. laser technology
b. photoconduction
c. thermal emission
d. Tyndall effect
40. The minimum number of bits required to store hexadecimal number AF is
a. 2
b. 4
c. 8
d. 16
41. Which of the following minerals is most resistant to chemical weathering
a. olivine
b. quartz
c. hornblende
d. potassium feldspar
42. An igneous rock contains a radioactive isotope that has a half life of 10 million
years.
Careful
analysis shows that
only one quarter of the original concentration
of the parent isotope is left. How
old is this igneous rock?
a) 10 Million years
b) 20 Million years
c) 30 Million years
d) 40 Million years
43.
The
discipline which deals with the understanding and treatment of mental
health is called:
a) applied psychology
b)clinical psychology
c) psychoanalysis
d) psychiatry
44. Overcooking of food should be avoided because overcooking:
a) makes the food difficult
to digest
b) makes the food toxic


c) increase the nutritive value of food
d)reduces the nutritive value of food
45. Optical fibre operates on the principle of:
a) Tyndal effect
b) photoelectric effect
c)laser technology
d)total internal reflection
46.
The
sensation of the skin is perceived by:
a) epidermis
b)
the dermis
c) endodermis
d)
none of these
47.
The
loudness of sound depends on its
a)
wavelength
b
) frequency
c
) amplitude
d)
all of these
48. A person standing in front of a mirror finds his image
smaller than him and
erect. this implies
that the mirror is:
a) plane
b) concave
c) convex
d) not of good quality
49.
The
densities of three liquids are D,
2D,
3D.
What
will be the density of the
resulting mixture if
equal volumes of the three liquids are
mixed?
a) 1.5D
b) 2D
c) 3D
d) 6D
50.
Which
of the following is a conventional designation of pre
-
released software?
a)Raw
b)Alpha
c)Omega
d)Beta

saus Friday, March 07, 2014 04:47 PM

[QUOTE=Adeel Ahmed;703015]1. The echo of Big Bang can be heard in the
form of:
a. cosmic rays
b. gamma rays
c. microwave radio signals
d. infrared radiations
2. Omar Khyyam
was a:
a. poet
b. mathematician
c. astronomer
d. all of these
3. Who was the early dentist and also
inventor of
many
surgical instruments:
a. Avicenna
b. Al. zahrawi
c. Ibn .ul. haithem
d. Al . Jahiz
4. who was the first
Muslim
mathematician who used '' Zero '' :
a. Ibn. e. Baitar
b. Ibn. Rushd
c. Ibn. Al. Haitham
d
. Al Khwarizmi
5.
Why
some nebulae shine?
a)because they emit light
b)due to burning process
c)because they contain bright stars
d)because they reflect light
6.
A
shooting star is
a)sun
2
Mian Shafiq 0345
-
7773680. Contact for Everyday Science and forestry
b) a comet
c) a meteor
d) an asteroid
7. A 'clinical death' takes
place when:
a) there is no pulse
b) there is no heart beat
c)pupils are fixed and dilated and there is no reaction to light
d) all of above
8.
What
is Hubble Classification :
a. classification of stars
b. classification of planets
c. classification of gal
axies
d. classification of earth's zones
9. Sun rises in the east and sets in the west due
to the:
a. shape of earth
b. rotation of earth around the sun
c. rotation of earth on its axis
d. movement of the sun
10.
What
are
cyclones?
a. sudden heavy
floods
b. no rain for a long period
c. heavy showers
d. violent wind and rain
11. From ecological point of view human beings are
taken as:
a. decomposers
b.
consumers’
c. producers
d. All of these
12. The major cause of land pollution is:
a) pesticides
b) chemical fertilizers
c) insecticides
d) all of these


b) a comet
c) a meteor
d) an asteroid
7. A 'clinical death' takes
place when:
a) there is no pulse
b) there is no heart beat
c)pupils are fixed and dilated and there is no reaction to light
d) all of above
8.
What
is Hubble Classification :
a. classification of stars
b. classification of planets
c. classification of gal
axies
d. classification of earth's zones
9. Sun rises in the east and sets in the west due
to the:
a. shape of earth
b. rotation of earth around the sun
c. rotation of earth on its axis
d. movement of the sun
10.
What
are
cyclones?
a. sudden heavy
floods
b. no rain for a long period
c. heavy showers
d. violent wind and rain
11. From ecological point of view human beings are
taken as:
a. decomposers
b.
consumers’
c. producers
d. All of these
12. The major cause of land pollution is:
a) pesticides
b) chemical fertilizers
c) insecticides
d) all of these
3

13.
The
sharp
-
bitter taste of unripe fruits is due to high concentration of:
a)phenolic compounds
b)volatile compounds
c)organic acids
d)starch
14. The use of antibiotic is a very effective way of killing disease causing bacteria.
Sometime
people don't finish all of their pills. this can result in:
a) some bacteria left unkilled
b) production of more bacteria
c) bacteria becoming sensitive to anti
biotics
d) bacteria becoming resistant to antibiotics
15. Flesh eaters are called:
a)omnivores
b) carnivores
c) herbivores
d) scavengers
16. Chromosomes are made up of:
a) DNA only
b) DNA & RNA
c) Proteins only
d) DNA, RNA & Proteins
17.
Plants
can be made disease resistant by:
a)heat Treatment
b)hormone treatment
c)colchicine treatment
d)breeding with their wild relatives
18. Important ingredient used in vicks vapor rub is obtained from the plant:
a) Cinamomum camphora
b) cinamomum zelamicum
c)
Curaima longa
d) All of these
19. Which of the following is both endocrine and exocrine gland:
a) thyroid
b) pancreas

c) parathyroid
d) all of these
20. The process by which small amount of impurities are added into a
semiconductor is called:
a) addition
b) conduction
c) doping
d) insulating
21. Which of the following is a semiconductor?
a) Mercury
b) magnesium
c) silver
d) none of these
22. Silver fish belongs to:
a) fish
b) insect
c) reptile
d) amphibian
23. Satiety is the condition in which patient lacks desire to:
a. drink
b. eat
c. sleep
d. talk
24. Function of iron in our
body is:
a. provide strength
b. oxygen transport
c. help in hydrolysis
d. breakdown fats
25. The non
-
communicable disease
is called:
a. Endemic
b. Acute
c. Chronic
d. Innate

26. Vitamins A,D,E and K are called:
a. water soluble vitamins
b. primary vitamins
c. basic vitamins
d. fat soluble vitamins
27. Which is not a function of HCL
in stomach:
a. softening fibrous food
elements
b. promoting formation of pepsin
c. killing bacteria ingested with food and drink
d. breakdown proteins into peptones
28. The sum of the kinetic energy and potential energy of an oscillating body is
a. maximum in the beginning
b. constant at al
l points
c. maximum at midway of the path
d. minimum in the beginning
29. Which term in psychology is generally used to refer to emotional disorders
such as,
anxiety,
depression
and phobia:
a.
psyches
b. hypnosis
c. neurosis
d. mental illness
30. All
Alkali metals react with water to form :
a. oxides
b. peroxides
c. hydroxides
d. hyper oxides
31. LASER is an
acronym for:
a. light amplification by standard emission of light
b. light absorption stimulated entrance of radiation
c. light amplification b
y stimulated emission of radiation
d. light absorption by standard emission of radiation
32. If carbon dioxide is passed through lime water for a long time , the cloudy
white colour (initially
formed ) disappears because of the formation of :
a. calcium bi
carbonate

b. calcium hydroxide
c. calcium carbonate
d. calcium sulphate
33.
Permanent
hardness of water is due to the presence of
a. calcium bicarbonate
b. magnesium bicarbonate
c. calcium sulphate
d. sodium bicarbonate
34. Articles made of copper and bro
nze slowly tarnish in air and turn green , the
green colour is due
to the formation of :
a. copper oxide
b. copper sulphide
c. copper oxalate
d. all of these
35. Bleaching powder losses its power on keeping for a long time because
a. it changes into calci
um hypochlorite
b. it changes into calcium chloride and calcium hydroxide
c. it absorbs moisture
d. it changes into calcium chloride and calcium chlorate
36. When the quantity of charge on each of the two bodies is
doubled,
the force
between them
becomes
a. one fourth
b. one half
c. twice
d. four times
37. Light year is
related to:
a. time
b. distance
c. energy
d. speed
38. The word
ceramic means:
a. hard material
b. soft material

c. dry material
d. burnt material
39. The operation of sola
r cell is based on
a. laser technology
b. photoconduction
c. thermal emission
d. Tyndall effect
40. The minimum number of bits required to store hexadecimal number AF is
a. 2
b. 4
c. 8
d. 16
41. Which of the following minerals is most resistant to chemical weathering
a. olivine
b. quartz
c. hornblende
d. potassium feldspar
42. An igneous rock contains a radioactive isotope that has a half life of 10 million
years.
Careful
analysis shows that
only one quarter of the original concentration
of the parent isotope is left. How
old is this igneous rock?
a) 10 Million years
b) 20 Million years
c) 30 Million years
d) 40 Million years
43.
The
discipline which deals with the understanding and treatment of mental
health is called:
a) applied psychology
b)clinical psychology
c) psychoanalysis
d) psychiatry
44. Overcooking of food should be avoided because overcooking:
a) makes the food difficult
to digest
b) makes the food toxic


c) increase the nutritive value of food
d)reduces the nutritive value of food
45. Optical fibre operates on the principle of:
a) Tyndal effect
b) photoelectric effect
c)laser technology
d)total internal reflection
46.
The
sensation of the skin is perceived by:
a) epidermis
b)
the dermis
c) endodermis
d)
none of these
47.
The
loudness of sound depends on its
a)
wavelength
b
) frequency
c
) amplitude
d)
all of these
48. A person standing in front of a mirror finds his image
smaller than him and
erect. this implies
that the mirror is:
a) plane
b) concave
c) convex
d) not of good quality
49.
The
densities of three liquids are D,
2D,
3D.
What
will be the density of the
resulting mixture if
equal volumes of the three liquids are
mixed?
a) 1.5D
b) 2D
c) 3D
d) 6D
50.
Which
of the following is a conventional designation of pre
-
released software?
a)Raw
b)Alpha
c)Omega
d)Beta[/QUOTE]

Seniors please solve this MCQs part

Nushrah Kabir Friday, March 07, 2014 07:53 PM

answers
 
1. The echo of Big Bang can be heard in the
form of:
a. cosmic rays

2. Omar Khyyam
was a:
d. all of these

3. Who was the early dentist and also
inventor of
many
surgical instruments:
a. Avicenna

4. who was the first
Muslim
mathematician who used '' Zero '' :
d. Al Khwarizmi

5.
Why
some nebulae shine?
c)because they contain bright stars

6.
A
shooting star is
c) a meteor

7. A 'clinical death' takes
place when:
d) all of above

8.
What
is Hubble Classification :
c. classification of gal
axies

9. Sun rises in the east and sets in the west due
to the:
c. rotation of earth on its axis

10.
What
are
cyclones?
d. violent wind and rain

11. From ecological point of view human beings are
taken as:
b.consumers’

12. The major cause of land pollution is:
d) all of these

13.bitter taste of unripe fruits is due to high concentration of:
c)organic acids

14. The use of antibiotic is a very effective way of killing disease causing bacteria.
Sometime
people don't finish all of their pills. this can result in:
a) some bacteria left unkilled

15. Flesh eaters are called:
b) carnivores

16. Chromosomes are made up of:
d) DNA, RNA & Proteins

17.
Plants
can be made disease resistant by:
c)colchicine treatment
18. Important ingredient used in vicks vapor rub is obtained from the plant:
a) Cinamomum camphora
b) cinamomum zelamicum
c)
Curaima longa
d) All of these:confused::confused:

19. Which of the following is both endocrine and exocrine gland:
d) all of these

20. The process by which small amount of impurities are added into a
semiconductor is called:
c) doping

21. Which of the following is a semiconductor?
d) none of these

22. Silver fish belongs to:
b) insect

23. Satiety is the condition in which patient lacks desire to:
b. eat

24. Function of iron in our
body is:
b. oxygen transport

25. The non-
communicable disease
is called:
c. Chronic

26. Vitamins A,D,E and K are called:
a. water soluble vitamins

27. Which is not a function of HCL
in stomach:
a. softening fibrous food
elements

28. The sum of the kinetic energy and potential energy of an oscillating body is
a. maximum in the beginning
b. constant at al
l points
c. maximum at midway of the path
d. minimum in the beginning:?:confused::confused:

29. Which term in psychology is generally used to refer to emotional disorders
such as,
anxiety,
depression
and phobia:
d. mental illness

30. All
Alkali metals react with water to form :
c. hydroxides
[SIZE="4"][/SIZE]the remaining will be posted later..... INSHA ALLAH

IRRAJ Friday, March 07, 2014 10:39 PM

major cause of land pollution is usage of chemical fertilizers only

maliksaim Saturday, March 08, 2014 03:36 AM

In case there is still confusion, chromosomes contain both DNA and RNA, along with proteins, though RNA is found only in "small amounts" (Advanced Biology, Kent, OUP). The first line of the wiki article on chromosomes says the same, however, a more authoritative source is the book quoted above, namely Advanced Biology by Michael Kent. The exact page referred to can be seen on Google Books with the search string: "small amounts of rna in chromosomes" "advanced biology" "michael kent".

Nushrah Kabir Saturday, March 08, 2014 08:26 AM

[QUOTE=IRRAJ;703156]major cause of land pollution is usage of chemical fertilizers only[/QUOTE]
:nono
the cause of land pollution is 'all of these' you may check it in any land pollution topic given on internet.....:):blink

actor Saturday, March 08, 2014 10:59 AM

eds 2014 solved
 
Everyday Science
1. The echo of Big Bang can be heard in the form of: a. cosmic rays b. gamma rays
c. microwave radio signals d. infrared radiations
c. microwave radio signals
2. Omar Khyyam was a: a. poet b. mathematician c. astronomer d. all of these
d. all of these
3. Who was the early dentist and also inventor of many surgical instruments: a. Avicenna b. Al. zahrawi c. Ibn .ul. haithem d. Al . Jahiz
. Al. zahrawi
4. who was the first Muslim mathematician who used '' Zero '' : a. Ibn. e. Baitar b. Ibn. Rushd c. Ibn. Al. Haitham d. Al Khwarizmi
d. Al Khwarizmi
5. Why some nebulae shine? a)because they emit light b)due to burning process c)because they contain bright stars d)because they reflect light
d)because they reflect light
6. A shooting star is a)sun
b) a comet c) a meteor d) an asteroid
c) a meteor
7. A 'clinical death' takes place when: a) there is no pulse b) there is no heart beat c)pupils are fixed and dilated and there is no reaction to light d) all of above
d) all of above
8. What is Hubble Classification : a. classification of stars b. classification of planets c. classification of galaxies d. classification of earth's zones
c. classification of galaxies
9. Sun rises in the east and sets in the west due to the: a. shape of earth b. rotation of earth around the sun c. rotation of earth on its axis d. movement of the sun
c. rotation of earth on its axis
10. What are cyclones? a. sudden heavy floods b. no rain for a long period c. heavy showers d. violent wind and rain
d. violent wind and rain
11. From ecological point of view human beings are taken as: a. decomposers b. consumers’ c. producers d. All of these
c. producers
12. The major cause of land pollution is: a) pesticides b) chemical fertilizers c) insecticides d) all of these
d) all of these
13. The sharp-bitter taste of unripe fruits is due to high concentration of: a)phenolic compounds b)volatile compounds c)organic acids d)starch
c)organic acids
14. The use of antibiotic is a very effective way of killing disease causing bacteria. Sometime people don't finish all of their pills. this can result in: a) some bacteria left unkilled b) production of more bacteria c) bacteria becoming sensitive to antibiotics d) bacteria becoming resistant to antibiotics
d) bacteria becoming resistant to antibiotics
15. Flesh eaters are called: a)omnivores b) carnivores c) herbivores d) scavengers
b) carnivores
16. Chromosomes are made up of: a) DNA only b) DNA & RNA c) Proteins only d) DNA, RNA & Proteins
only d) DNA, RNA & Proteins

17. Plants can be made disease resistant by: a)heat Treatment b)hormone treatment c)colchicine treatment d)breeding with their wild relatives
b)hormone treatment
18. Important ingredient used in vicks vapor rub is obtained from the plant: a) Cinamomum camphora b) cinamomum zelamicum c) Curaima longa d) All of these
a) Cinamomum camphora
19. Which of the following is both endocrine and exocrine gland: a) thyroid b) pancreas
c) parathyroid d) all of these
b) pancreas
20. The process by which small amount of impurities are added into a semiconductor is called: a) addition b) conduction c) doping d) insulating
c) doping
21. Which of the following is a semiconductor? a) Mercury b) magnesium c) silver d) none of these
c) silver
22. Silver fish belongs to: a) fish b) insect c) reptile d) amphibian
b) insect
23. Satiety is the condition in which patient lacks desire to: a. drink b)eat c. sleep d. talk
b)eat
24. Function of iron in our body is: a. provide strength b. oxygen transport c. help in hydrolysis d. breakdown fats
b. oxygen transport
25. The non- communicable disease is called: a. Endemic b. Acute c. Chronic d. Innate
c. Chronic
26. Vitamins A,D,E and K are called: a. water soluble vitamins b. primary vitamins c. basic vitamins d. fat soluble vitamins
d. fat soluble vitamins
27. Which is not a function of HCL in stomach: a. softening fibrous food elements b. promoting formation of pepsin c. killing bacteria ingested with food and drink d. breakdown proteins into peptones
promoting formation of pepsin
28. The sum of the kinetic energy and potential energy of an oscillating body is a. maximum in the beginning b. constant at all points c. maximum at midway of the path d. minimum in the beginning
b. constant at all points
29. Which term in psychology is generally used to refer to emotional disorders such as, anxiety, depression and phobia: a. psyches b. hypnosis c. neurosis d. mental illness
c. neurosis
30. All Alkali metals react with water to form : a. oxides b. peroxides c. hydroxides d. hyper oxides
c. hydroxides
31. LASER is an acronym for: a. light amplification by standard emission of light b. light absorption stimulated entrance of radiation c. light amplification by stimulated emission of radiation d. light absorption by standard emission of radiation
c. light amplification by stimulated emission of radiation
32. If carbon dioxide is passed through lime water for a long time , the cloudy white colour (initially formed ) disappears because of the formation of : a. calcium bicarbonate
b. calcium hydroxide c. calcium carbonate d. calcium sulphate
b. calcium hydroxide
33. Permanent hardness of water is due to the presence of a. calcium bicarbonate b. magnesium bicarbonate c. calcium sulphate d. sodium bicarbonate
?
34. Articles made of copper and bronze slowly tarnish in air and turn green , the green colour is due to the formation of : a. copper oxide b. copper sulphide c. copper oxalate d. all of these
?
35. Bleaching powder losses its power on keeping for a long time because a. it changes into calcium hypochlorite b. it changes into calcium chloride and calcium hydroxide c. it absorbs moisture d. it changes into calcium chloride and calcium chlorate
d. it changes into calcium chloride and calcium chlorate

36. When the quantity of charge on each of the two bodies is doubled, the force between them becomes a. one fourth b. one half c. twice d. four times
a. one fourth
37. Light year is related to: a. time b. distance c. energy d. speed
b. distance
38. The word ceramic means: a. hard material b. soft material
c. dry material d. burnt material
a. hard material
39. The operation of solar cell is based on a. laser technology b. photoconduction c. thermal emission d. Tyndall effect
a) photocoduction
40. The minimum number of bits required to store hexadecimal number AF is a. 2 b. 4 c. 8 d. 16
d. 16
41. Which of the following minerals is most resistant to chemical weathering a. olivine b. quartz c. hornblende d. potassium feldspar
b. quartz
42. An igneous rock contains a radioactive isotope that has a half life of 10 million years. Careful analysis shows that only one quarter of the original concentration of the parent isotope is left. How old is this igneous rock? a) 10 Million years b) 20 Million years c) 30 Million years d) 40 Million years
?
43. The discipline which deals with the understanding and treatment of mental health is called: a) applied psychology b)clinical psychology c) psychoanalysis d) psychiatry
a) applied psychology
44. Overcooking of food should be avoided because overcooking: a) makes the food difficult to digest b) makes the food
c) increase the nutritive value of food d)reduces the nutritive value of food
d)reduces the nutritive value of food
45. Optical fibre operates on the principle of: a) Tyndal effect b) photoelectric effect c)laser technology d)total internal reflection
d)total internal reflection
46. The sensation of the skin is perceived by: a) epidermis b) the dermis c) endodermis d) none of these
a) epidermis
47. The loudness of sound depends on its a) wavelength b) frequency c) amplitude d) all of these
c) amplitude
48. A person standing in front of a mirror finds his image smaller than him and erect. this implies that the mirror is: a) plane b) concave c) convex d) not of good quality
b) convex
49. The densities of three liquids are D, 2D, 3D. What will be the density of the
resulting mixture if equal volumes of the three liquids are mixed? a) 1.5D b) 2D c) 3D d) 6D
b) 2D
50. Which of the following is a conventional designation of pre-released software? a)Raw b)Alpha c)Omega d)Beta
d) beta


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