Which of the following statements is/are correct about vaccination that provides protection against an infectious disease?

1. It blocks the entry of the infectious agent into body

2. It produces antibodies against infection

3. It kills the infectious agent when it enters in the body

Which of the following catalytic systems is used for the reduction of unsaturated hydrocarbon to saturated hydrocarbon?

(a) Copper and H2

(b) Iron and H2

(c) Zinc and H2

(d) Nickel and H2

Consider the following statements about the Jorwe culture of the Deccan :

1. It covers, practically, the whole of modern Maharashtra except the coastal Konkan district.

2. The Pravara-Godavari valleys seem to have been the nuclear zone.

3. The large sites of this culture yield evidence of shifting agriculture

Consider the following statements about Sawai Jai Singh's astronomical work:

1. He learnt of the accuracy of European observations, and obtained de La Hire's tables from which he reproduced a refraction table.

2. His astronomers also developed a telescope of their own to observe the lunar phases of Venus.

Consider the following statements about the initial development of railways in India by the British:

1. Private financial investors for railways would get land free from the British Government in India.

2. The investors would get a return of 5 percent on their capital from the government if they ran at a loss or secured inadequate profit.

3. The railways would be jointly managed with the government

Which of the statements given below are true about cirrocumulus cloud ?

1. High, thin, puffy white clouds of ice crystals that look like ripples

2. They appear between 20000 feet and 40000 feet above the Earth's surface

3. One of its types is called a 'mackerel sky' because the clouds resemble large fish scales, especially when they are coloured pink at sunset

Consider the following statements:

1. Angular velocity for all locations on the Earth's surface is the same while linear velocity varies

2. Linear velocity is minimum at the equator and maximum at the poles

Consider the following statements regarding weightage of different articles in Wholesale Price Index (WPI) :

1. Fuel and power have higher weightage in WPI than that of primary articles

2. Weightage of manufactured products in WPI is higher than that of fuel and power