Science & Technology Questions for IAS Prelims - Set 8

Science & Technology Questions for IAS Prelims - Set 8


1. The volume of water__________ after freezing

a) Increases
b) decreases
c) Doesn't change
d) First decreases then increases

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ANSWER: a) Increases

The volume of water increases after freezing due to molecular expansion.



2. Which of the following is correct descending order in pyramid of food chain

a) clover - snail - thrush - hawk
b) snail -clover - thrush - hawk
c) snail -clover -hawk- thrush
d) hawk- hawk- snail -clover

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ANSWER: d) hawk- hawk- snail -clover

Clover is a plant and it is the producer in this food chain. A thrush eats lots of snails, and a hawk eats lots of thrushes.



3. Which of the following planets has ring around them?

1. Jupiter
2. Saturn
3. Uranus
4. Neptune

a) 1,2,3
b) 2,3,4
c) 1,3,4
d) All the above

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ANSWER: d) All the above

The rings around Jupiter, Uranus, and Neptune are much smaller, darker, and fainter than the rings of Saturn. All are gas giants.



4. If a color blind woman marries a normal man

a) All her daughters are color-blind where as all the Sons have normal color vision.

b) All her sons are color-blind where as all the daughters are carrier.

c) All her sons are color-blind where as all the daughters have normal color vision.

d) None

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ANSWER: c) All her sons are color-blind where as all the daughters have normal color vision.

Color blindness is usually a sex-linked condition. The genes that produce photo pigments are carried on the X chromosome; if some of these genes are missing or damaged it causes color blindedness.



5. Consider the following statements

1. Eukaryotic cells have a membrane-bound nucleus.
2. Bacteria are an example of Eukaryotic cells
3. Which of the above statements is/are correct?

a) Only 1
b) Only 2
c) Both
d) None

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ANSWER: a) Only 1

Bacteria are an example of prokaryotic cells



6.Consider the following statements

1. Cellulose is a polymer of beta glucose.

2. Cellulose molecules are held together by hydrogen bonds

3. The cellulose in a cell is exported to its outer membrane by Golgi bodies.

Which of the following statements are true?

a) 1,2
b) 2,3
c) 1,3
d) All

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ANSWER: d) All

Cellulose molecules are held together by hydrogen bonds to form microfibrils and these form cellulose fibres.



7. Arrange the following in descending order by percentage of total electricity production in India.

a) Hydro, Thermal, Renewable, Nuclear
b) Hydro, Thermal, Nuclear, Renewable
c) Thermal, Hydro,Nuclear, Renewable
d) Thermal, Hydro, Renewable, Nuclear

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ANSWER: d) Thermal, Hydro, Renewable, Nuclear

Thermal energy contributed 64% (100,351.5 MW) of the country's total power generating capacity, while hydro energy contributed 24% (36,885.40 MW), renewable energy sources around 9.8% (15,427.10 MW), and nuclear energy contributed 3% (4,120 MW) to the total capacity.



8. Consider the following statements

1. ISRO is now working on Chandrayaan-2 joint programme with the Russian Federal Space Agency

2. The mission is planned to be launched to the Moon by a Polar Satellite Launch Vehicle Geosynchronous Satellite Launch Vehicle (GSLV)

Which of the above statements is/are correct?

a) Only 1
b) Only 2
c) Both
d) None

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ANSWER: a) Only 1

The mission is planned to be launched to the Moon by a Geosynchronous Satellite Launch Vehicle (GSLV)



9. Which country is declared as Ebola free ?

a) Guinea
b) Benin
c) Liberia
d) Sierra Leone

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ANSWER: c) Liberia

The Ebola epidemic is slowing in Sierra Leone and Guinea. Liberia has been declared Ebola-free by WHO



10. Which of the following is correct if arranged from the highest to lowest fuel value.

a) Diesel - Kerosene - Wood - Coal - Hydrogen
b) Kerosene - Diesel - Wood - Coal - Hydrogen
c) Coal - Hydrogen - Wood - Diesel - Kerosene
d) Hydrogen - Kerosene - Diesel - Coal - Wood

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ANSWER: d) Hydrogen - Kerosene - Diesel - Coal - Wood

Fuel value is also called as a Calorific Value.Higher Calorific Value Is The maximum amount of energy that can be obtained from the combustion of a fuel


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    Discussion

  • RE: Science & Technology Questions for IAS Prelims - Set 8 -Aman Bhandari (06/23/15)
  • I think question number 4 all female will be Carriers too inspite of normal vision