Big bang : cosmic rays.
If u search bigbang sound on goolge, it simply shows "cosmic microwave background". M I right?? |
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.
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Where are the mcqs???
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[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 |
[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 |
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 |
major cause of land pollution is usage of chemical fertilizers only
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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".
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[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 |
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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