INSIGHT UPSC QUIZ

Match the following pairs with reference to different types of ‘Phyla’ with their most distinctive features:

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?

The presence of certain minerals is essential in water, however, if found in excess they can be harmful to our body. In this context, which of the following statements are correct?

1. Deficiency of fluoride in drinking water causes diseases such as tooth decay.

2. Excessive sulphate in drinking water causes laxative effect.

3. Excess lead in drinking water can cause disease such as ‘blue baby’ syndrome.

Select the correct answer using the code given below.

Consider the following statements:

1. Exchange of gases in plants occurs not only across the surface of leaves but also across the surface of stems and roots.

2. Plant close its pores known as the Stomata, when they do not need carbon dioxide for photosynthesis.

3. Guard cells present in plants are responsible for controlling the movement of water in them. 

Which of the statements given above is/are correct?

Fertilizers are commercially produced plant nutrients. In this context, consider the following statements:

1. Fertilizers get washed away due to excessive irrigation.

2. Micro-organisms in the soil are harmed by the continuous use of fertilizers.

3. Fertilizers supply nitrogen, phosphorus and sodium to the soil. 

Select the correct answer using the code given below:

In the question given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements given below carefully:

Assertion (A): The Sun at the sunrise or the sunset appears red whereas at noon, the Sun appears white.

Reason (R): Light from the Sun near the horizon passes through larger distance in the earth’s atmosphere than the light from the Sun overhead.

Choose the correct answer using the codes given below:

Read the following statements carefully and select the correct answer from codes given below:

1. Working of electric motors involves the electric effect of electric current.

2. Working of electric generators involves the magnetic effect of moving magnets. 

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

 Water vapour present in the atmosphere is formed due to which of the following factors?

1. Heating of water bodies.

2. Activities of living organisms.

3. Weathering of rocks.

4. Photosynthesis.

Select the correct answer using the code given below:

Read the following statements carefully and select the correct answer from the code given below:

1. Dugong (Dugong dugon) is an herbivorous mammal.

2. Dugongs are listed as Critically endangered on the IUCN Red List of Threatened Species.

3. Recently, an announcement was made by Tamil Nadu State government for the set-up of Dugong conservation reserve. 

Which of the statements given above is/are correct?