Every Day Science Paper - 1993
Partial Solution
1. Which of the following statements are false and which are true.
a) Urea is a phosphorous fertilizer
False
b) Ibn Baitar was a renowned Muslim Botanist
True
c) Penicillin was discovered by Edward Jenner
False
d) Cellulose is a natural polymer
True
e) Vitamin A and D are water soluble.
False
f) Amoeba is a unicellular animal
True
g) Solar eclipse occurs in full moon
False
h) Water is a bad conductor of electricity
False
i) Leprosy is a disorder of the nervous system
False
j) Chlorofluorocarbons cause decomposition of ozone
True
4. Fill in the blanks with correct choice.
1. Quartz is chemically a
silicate.
2. Chicken egg is composed of
one cell.
3. Visible light energy has the wavelength range of
400 to 700.
4. The particles with positive charge but having mass equal to that of electron is called
proton.
5. Gas in children’s play-balloons going upward is
Helium.
6. Standard pressure is
760 mm.
7. Iron corrodes due to the formation of
Iron Oxide.
8. Explain in detail what is a balanced diet; name a nutrient present in each of the following food:
1. Apple
2. Bread
3. Meat
4. Butter
5. Orange
6. Egg
7. Milk
8. Spinach
Answers:
1. Vitamin C
2. Starch
3. Vitamin A
4. Vitamin A
5. Vitamin C
6. Vitamin D
7. Vitamin A, C, D
8. Vitamin K
12. Name the instruments used for measuring each of the following:
(i) Pressure
(ii) Voltage
(iii) Purity of milk
(iv) Temperature
(v) Velocity of wind
Answers:
(i). Barometer
(ii). Voltmeter
(iii). Lactometer
(iv). Thermometer
(v). Anemometer
15. Fill in the blanks:
(i) Starch is a polymer of
glucose.
(ii) A big astronomical observatory known as the
Royal Greenwich, London was established during the reign of Caliph Mamoon.
(iii) Adrenalin is secreted by the Adrenal
gland.
(iv)
Mars planet is nearest to the earth.
(v) CFC is the abbreviation of
Chlorofluorocarbon.
(vi) The process of conversion of a material from solid state directly to gaseous state is called
sublimation.
(vii) A junction diode is formed by PWP semiconductor pieces whereas junction transistor is a
sandwich made up of PNP transistor.
~~~~~~~~******~~~~~~~~~