INSIGHT UPSC QUIZ

 Which of the following statement(s) about Acquired Immuno Deficiency Syndrome (AIDS) is/are correct?

1. AIDS is a congenital disease caused by a retrovirus known as Human Immuno deficiency Virus (HIV).

2. AIDS is characterised by a progressive decrease in the number of T-lymphocytes in the body of the infected person. 

Select the correct answer using the code given below.

Consider the following statements: 

1. The motion of the moon around the earth is due to the centrifugal force. 

2. The moon rotates around its axis due to the gravitational pull of the earth. 

Which of the statement(s) given above is/are NOT correct?

 Consider the following statements with reference to the ‘magnetic field’ of a bar magnet:

1. Magnetic field is a quantity that has both direction and magnitude. 

2. Inside the magnet, the direction of field lines is from its south pole to north pole.

3. Magnetic field-lines of two different magnets can intersect each other.

Which of the statement(s) given above is/are correct?

 Manure contains large quantities of organic matter and also supplies small quantities of nutrients to the soil. In this context, consider the following statements:

1. The organic matter in manure helps in improving the soil structure.

2. It increases the water holding capacity in sandy soils.

3. It causes water logging in clayey soils.

Select the correct answer using the code given below:

 Consider the following statements:

1. Some substances like carbon dioxide or oxygen can move across the cell membrane by a process called Osmosis. 

2. In the cell’s external environment, the concentration of carbon dioxide is low as compared to that inside the cell.

Which of the statement(s) given above is/are correct?

 Compass is an important tool used for navigation since old days. In this context, consider the following statements:

1. The compass needle is a magnet which align itself in a particular direction.

2. The compass needle always points towards the magnetic south pole of the earth.

Which of the statement(s) given above is/are correct?

Which among the following are the characteristic features of birds?

1. They are cold-blooded animals.

2. They lay eggs.

3. Two forelimbs are modified for flight.

4. They breathe through lungs.

Select the correct answer using the code given below:

The twinkling of a star occurs due to atmospheric refraction of starlight. This twinkling phenomenon occurs only in stars and not in planets, it is because of which of the following reasons?

Desirable characteristics of a crop variety helps in easy adoption of that crop by the farmers. In this context, consider the following statements:

1. Incorporating desirable characters into crop varieties can be done through fertilisation.

2. Dwarfness is desired in cereals, so that less nutrients are consumed by these crops. 

3. Hybridisation refers to crossing between genetically similar plants.

Which of the statement(s) given above is/are correct?

 In the context of nature of light, read the following statements carefully: 

1. Light does not travel in the same direction in all mediums. 

2. Light propagates with different speeds in different mediums. 

3. Light travels fastest in air with speed of 3×10⁸ m/s. 

4. Speed of light reduces considerably in glass or water.

Which of the statements given above is/are correct?