4206: The resolving power of an electron microscope is much higher than that of an ordinary light microscope because resolving power increases:
(a) If wavelength is short and wavelength of electron beam can be made quite small by accelerating the electrons.
(b) If wavelength is short and light given by electrons has very short wavelength.
(c) If magnification is high and electronic lens provides much higher magnification.
(d) If magnification is high and the electron microscope has a battery of lenses to provide high magnification.
4207: 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
4208: Assertion (A):
Scientists can cut apart and paste together DNA molecules at will, regardless of the source of the molecules.
Reason (R):
DNA fragments can be manipulated using restriction endonucleases and DNA ligases.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is NOT a correct explanation of A
(c) A is true but R is false
(d) A is fasle but R is true
4209: With reference to the steel industry in India in the recent times, consider the following statements:
1. Vizag Steel Plant (RINL) has been declared Mini Ratna.
2. Merger of IISO with SAIL has been completed.
Which of the statements given above is/are correct ?
(A) 1 only
(B) 2 only
(C) Both 1 and 2
(D) Neither 1 nor 2
4210: Which one following companies had started a rural marketing network called e chaupal?
(a) ITC
(b) Dabur
(c) Proctor and Gamble
(d) Hindustan Lever