Union Public Service Commission Civil Services (Prelims) General Studies Paper-I

UPSC Prelims GS Paper-I Solved Papers

Master official previous years' questions for Indian Polity & Governance, Ancient, Medieval & Modern Indian History, Indian & World Geography, Economic & Social Development, Environment & Ecology, and General Science.

0%
Score Tracker
Live accuracy rate
0
Correct
0
Wrong
0
Attempted
Filter UPSC Prelims GS Questions

All UPSC Prelims GS PYQs / All GS Subjects / All Topics

Marking pattern: +2.00 positive, -0.66 negative (UPSC GS Paper-I Pattern).

2800 Questions Page 32 of 112
776

Why camphor disappears when kept on a plate ?

UPSC Prelims 1981 GS Paper General Science
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
777

The sex of the offspring is determined, when

UPSC Prelims 1981 GS Paper General Science
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
778

Colour blindness is

UPSC Prelims 1981 GS Paper General Science
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
779

What happens when alcohol is taken in excess ?

UPSC Prelims 1981 GS Paper General Science
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
780

What happens when the temperature of water falls from $30^{\circ}C$ and $0^{\circ}C$ ?

UPSC Prelims 1981 GS Paper General Science
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
781

The deficiency of causes goitre

UPSC Prelims 1981 GS Paper General Science
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
782

Why is it easier to cook in a pressure cooker ?

UPSC Prelims 1981 GS Paper General Science
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
783

When the rice is boiled, it expands because

UPSC Prelims 1981 GS Paper General Science
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
784

Which of the following is the most common wheat disease in India ?

UPSC Prelims 1981 GS Paper Agriculture & Botany
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
785

Gypsum is added to the soil ?

UPSC Prelims 1981 GS Paper Agriculture & Soil Science
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
786

Why the Indian farmers plough their fields during the time interval between two crops ?

UPSC Prelims 1981 GS Paper Agriculture & Agronomy
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
787

Maximum production of paddy per unit water consumption can be best achieved in a

UPSC Prelims 1981 GS Paper Agriculture & Agronomy
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
788

Hybridisation is useful in developing improved crops by

UPSC Prelims 1981 GS Paper General Science
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
789

Which of the following crops has the highest photosynthetic activity?

UPSC Prelims 1981 GS Paper General Science & Botany
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
790

Which of the following statements about the cultivation of tea and coffee is true ?

UPSC Prelims 1981 GS Paper Economic & Agricultural Geography
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
791

Which soil is best suited for paddy crop?

UPSC Prelims 1981 GS Paper Physical & Agricultural Geography
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
792

The varieties of corn can be improved by which of the following methods ?

UPSC Prelims 1981 GS Paper General Science & Agriculture
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
793

Forests help in

UPSC Prelims 1981 GS Paper Environment & Ecology
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
794

Different seasons are formed because

UPSC Prelims 1981 GS Paper Physical Geography
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
795

Earthquakes are caused due to

UPSC Prelims 1981 GS Paper Physical Geography
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
796

There are two places P and Q. The longitudes of P and Q are $45^{\circ}$ E and $60^{\circ}W$ respectively. What will be the difference in their local times

UPSC Prelims 1981 GS Paper Physical Geography
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
797

What are the grass lands of South America called ?

UPSC Prelims 1981 GS Paper World Geography
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
798

Humidity of the air

UPSC Prelims 1981 GS Paper Physical Geography
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
799

Himalayan rivers are perennial because

UPSC Prelims 1981 GS Paper Indian Geography
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation
800

Why is there a severe difference in the climates of Northern and Southern Hemisphere ?

UPSC Prelims 1981 GS Paper Physical Geography
Answer & Detailed Key
Click an option to evaluate
Select an option on the left to reveal the detailed answer and reference context.
Detailed Explanation & Source Citation