INSIGHT UPSC QUIZ

Read the following statements carefully:

1. Vector-borne diseases are caused by parasites, viruses and bacteria. 

2. Skin infections are generally caused by different kinds of fungi.

3. Elephantiasis is a disease caused by different species of worms.

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

 Which of the following are the properties of the image formed by a plane mirror?

1. The image is always real and erect. 

2. The size of the image is equal to that of the object. 

3. The image formed is as far behind the mirror as the object is in front of it. 

4. The image is laterally inverted.

Select the correct answer using the code given below.

 Some countries now use alcohol as an additive in petrol. In context of this, consider the following statements: 

1. Addition of alcohol increases the burning efficiency of petrol and reduces knocking.

2. Petrol added with small quantities of alcohol becomes more stable and doesn’t become too hot in warm areas or too cold in freezing temperatures.

3. Alcohol is a cleaner fuel which gives rise to only carbon dioxide and water on burning in sufficient oxygen.

Which of the statements given above is the correct reason for using alcohol as an additive in petrol?

1. Which of the following statement(s) in the context of ‘Human Eye’ is/are NOT correct?

1. Most of the refraction of the light rays entering the eye occurs at the outer surface of the crystalline lens.

2. Iris is a dark muscular diaphragm that controls the size of the pupil. 

3. Pupil regulates and controls the amount of light entering the eye. 

4. Retina is a delicate membrane having enormous number of light-sensitive cells.

Select the correct answer using codes 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?

With reference to Pisces – a category of animals, consider the following statements: 

1. Their skin is covered with scales and it has mucus glands on their skin. 

2. They are aquatic animals that obtain oxygen dissolved in water by using gills.

3. Unlike humans, they are cold-blooded and have only three chambers in their heart. 

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

Consider the following statements about pesticide residue in our food chain:

1. It is introduced in the food chain by aquatic plants and animals.

2. These chemicals get accumulated progressively at each trophic level. 

3. Human body accumulates minimum concentration of these chemicals.

Select the correct answer using the code given below:

Which of the following statements about ‘Sponges’ is/are correct?

1. Sponges are generally marine organisms and are multicellular symmetrical animals. 

2. In sponges, eggs and sperms are produced by the same individual. 

3. Sponges reproduce asexually by formation of gametes and sexually by fragmentation. 

Select the correct answer using the code given below.

The immune system is a complex network of cells known as immune cells that contains lymphocytes. In this context, consider the following statements: 

1. Lymphocytes are red blood cells and one of the body's main types of immune cells. 

2. Lymphocytes are made in the bone marrow and found in the blood and lymph tissue. 

Which of the statements given above is/are correct?

 In context of General Science, consider the following statements:

1. All fluids exert pressure on the base and walls of the container in which they are enclosed.

2. All objects experience a downward force of buoyancy when they are immersed in a fluid.

3. The magnitude of buoyancy force is independent of the density of the fluid in which the object is immersed.

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