271: With reference to Need tree, consider the following statements :
1. Neem oil can be used as a pesticide to control the proliferation of some species of insects and mites.
2. Neem seeds are used in the manufacture of biofuels and hospital detergents.
3. Neem oil has applications in pharmaceutical industry.
Which of the statements given above is / are correct ?
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
272: In the given figure, all line segments of the shaded portion are of the same length and at right angles to each other. The same can be cut out of a board of side 10 cm. What is the area of the shaded portion ?
(a) 36 cm2
(b) 48 cm2
(c) 52 cm2
(d) 64 cm2
273: What is the correct sequence of the following events ?
I. The August Offer
II. The I. N. A. trial
III. The Quit India Movement
IV. The Royal Indian Naval Ratings Revolt
Select the correct answer using the codes given below :
Codes :
(a) I, III, II, IV
(b) III, I, II, IV
(c) I, III, IV, II
(d) III, I, IV, II
274: Which principle among the following was added to the Directive Principles of State Policy by the 42nd Amendment to the Constitution?
(a) Equal pay for equal work for both men and women
(b) Participation of workers in the management of industries
(c) Right to work, education and public assistance
(d) Securing living wage and human conditions of work to workers
275: The chief constituent of gobar gas is:
(a) Hydrogen
(b) Nitrogen
(c) Ethane
(d) Methane