1.In fireworks, the green flame is produced because of
A) sodium
B) potassium
C) barium
D) mercury
2. Potassium Permanganate is used for purifying drinking water, because
A) it is a sterilising agent
B) it dissolves the impurities of water
C) it is a reducing agent
D) it is an oxidising agent
3. The theory which advocates that living beings can arise only from other living beings is termed
A) Bio-genesis
B) Abiogenesis
C) Catastrophism
D) Cosmozoic
4. The uranium fuel used worldwide is mainly in the form of
A) U3O8
B) UO2
C) UF6
D) U metal
5. The radioactive element most commonly detected in humans is
A) potassium-40
B) cobalt-60
C) iodine-131
D) plutonium-238
6.If a tropical rain forest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because
A) The soil of rain forest is deficient in nutrients
B) Propagules of the trees in a rain forest have poor viability
C) The rain forest species are slow growing
D) Exotic species invade the fertile soil of rain forest
7.Which of the following has got more heat capacity?
A) Iron piece
B) Water
C) Gold piece
D) Benzene
8.The weight of an object will be minimum when it is placed at
A) The North Pole
B) The South Pole
C) The Equator
D) The center of the Earth
9. Which of the following plants is not capable of manufacturing own food?
A) Algae
B) Mushroom
C) Carrot
D) Cabbage
10.Suppose if we measure the time lapse between the two Sunsets by sitting in the beach , from this we can estimate
A) The distance between the sun and earth
B) The depth of the ocean
C) The radius of the earth
D) The radius of the sun
11. Of the following, which element is common to all acids
A) hydrogen
B) carbon
C) sulphur
D) oxygen
12. What does airbag, used for safety of car driver, contain?
A) Sodium bicarbonate
B) Sodium azide
C) Sodium nitrite
D) Sodium peroxide
13. The gases used in different types of welding would include
A) oxygen and hydrogen
B) oxygen and acetylene
C) oxygen, acetylene and argon
D) oxygen, hydrogen, acetylene and nitrogen
14. Which of the following parts of the sun is easily visible only during a total solar eclipse?
A) core
B) photosphere
C) sunspots
D) corona
15. The intencity of Earthquakes is measured on
A) Richter scale
B) Secant scale
C) Mercalli scale
D) Beaufort scale
Answers
1.C
2.D
3. A
4.B
5. A
6. A
7. B
8. D
9. B
10. D
11. A
12. B
13. B
14. D
15. A
A) sodium
B) potassium
C) barium
D) mercury
2. Potassium Permanganate is used for purifying drinking water, because
A) it is a sterilising agent
B) it dissolves the impurities of water
C) it is a reducing agent
D) it is an oxidising agent
3. The theory which advocates that living beings can arise only from other living beings is termed
A) Bio-genesis
B) Abiogenesis
C) Catastrophism
D) Cosmozoic
4. The uranium fuel used worldwide is mainly in the form of
A) U3O8
B) UO2
C) UF6
D) U metal
5. The radioactive element most commonly detected in humans is
A) potassium-40
B) cobalt-60
C) iodine-131
D) plutonium-238
6.If a tropical rain forest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because
A) The soil of rain forest is deficient in nutrients
B) Propagules of the trees in a rain forest have poor viability
C) The rain forest species are slow growing
D) Exotic species invade the fertile soil of rain forest
7.Which of the following has got more heat capacity?
A) Iron piece
B) Water
C) Gold piece
D) Benzene
8.The weight of an object will be minimum when it is placed at
A) The North Pole
B) The South Pole
C) The Equator
D) The center of the Earth
9. Which of the following plants is not capable of manufacturing own food?
A) Algae
B) Mushroom
C) Carrot
D) Cabbage
10.Suppose if we measure the time lapse between the two Sunsets by sitting in the beach , from this we can estimate
A) The distance between the sun and earth
B) The depth of the ocean
C) The radius of the earth
D) The radius of the sun
11. Of the following, which element is common to all acids
A) hydrogen
B) carbon
C) sulphur
D) oxygen
12. What does airbag, used for safety of car driver, contain?
A) Sodium bicarbonate
B) Sodium azide
C) Sodium nitrite
D) Sodium peroxide
13. The gases used in different types of welding would include
A) oxygen and hydrogen
B) oxygen and acetylene
C) oxygen, acetylene and argon
D) oxygen, hydrogen, acetylene and nitrogen
14. Which of the following parts of the sun is easily visible only during a total solar eclipse?
A) core
B) photosphere
C) sunspots
D) corona
15. The intencity of Earthquakes is measured on
A) Richter scale
B) Secant scale
C) Mercalli scale
D) Beaufort scale
Answers
1.C
2.D
3. A
4.B
5. A
6. A
7. B
8. D
9. B
10. D
11. A
12. B
13. B
14. D
15. A
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