INSIGHT UPSC QUIZ

 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?

 Which of the following is NOT an example of ‘Autoimmune Disease’? 

 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?

 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.

A lemon kept in water in a glass tumbler appears to be bigger than its actual size, when viewed from the sides. This is because of which of the following reasons:

With reference to ‘blood’ present in the human body, consider the following statements:

1. It carries oxygen and food to all the cells in human body. 

2. It collects wastes from the cells for disposal. 

3. It is a type of connective tissue. 

Which of the statements given above is/are correct?

Consider the following statements about the ‘scattering of light’: 

1. Very fine particles scatter mainly blue light while particles of larger size scatter light of longer wavelengths. 

2. If the size of the scattering particles is large enough, then, the scattered light may even appear white. 

Which of the statements given above is/are correct?

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?

 In context of ‘Scrub Typhus’, which of the statements given below is/are correct?

1. It is a disease caused by a bacterium and it spreads to people through bites of infected chiggers.

2. Antibiotics are most effective form of medicine to cure this disease.

3. Recently, a special vaccine has been developed for its prevention by the Department of Biotechnology.

Select the correct answer using codes given below:

Consider the following statements about ‘Human Body’:

1. Muscles contain special proteins which contract and relax to cause movement. 

2. We can control the movement of all the muscles in our body.

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