INSIGHT UPSC QUIZ

Which of the following phenomena are caused due to ‘atmospheric refraction’?

1. Flickering of objects seen through a turbulent stream of hot air rising above a fire.

2. The reddening of the sun at sunrise and the sunset.

3. The apparent flattening of the Sun’s disc at sunrise and sunset.

4. The Sun is visible to us about 2 minutes before the actual sunrise, and about 2 minutes after the actual sunset.

Select the correct answer using the code given below.

Consider the following statements about ‘Acid Rain’: 

1. Oxides of sulphur and nitrogen are major contributors to acid rain.

2. Acid rain is good for agriculture as it provides nitrogen for the growth of plants.

3. When acid rain flows into the river, it increases the pH level of river water. 

Which of the statements given above is/are correct?

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?

Read the following statements carefully: 

1. Motion of the moon around the earth.

2. Tides in open seas.

3. Rotation of earth.

4. Motion of planets around the Sun.

Which of the events given above are result of force of ‘Gravitation’?

Unicellular organism are unique because they are made up of a single cell only. Which of the following is/are examples of unicellular organisms?

1. Amoeba

2. Yeast

3. Bacteria

Select the correct answer using the code given below:

 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.

Vaccines are now available for preventing a whole range of infectious diseases. Which among the following infectious diseases are preventable by the use of vaccine?

1. Polio

2. Measles

3. Whooping cough

4. Human Papilloma Virus (HPV)

Select the correct answer using the code given below:

 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?

Consider the following statements about ‘Biochemical Oxygen Demand’ (BOD):

1. It is the amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water.

2. Highly polluted water have BOD value of less than 5 ppm. 

Which of the statements given above is/are correct?

Consider the following statements about the ‘properties of ethanol’: 

1. Ethanol is insoluble in water. 

2. Consumption of small quantities of dilute ethanol causes drunkenness. 

3. Ethanol can be blended with diesel.

4. Ethanol is used as a solvent in many medicines.

Which of the statements given above are correct?