826: Council of Ministers of the Union of India is responsible to:

(a) Rajya Sabha

(b) Prime Minister

(c) President

(d) Lok Sabha
827: When light enters a closed room through a small hole in the door, the image of an outside building appears as inverted on the opposite wall. This is because:

(a) The hole acts as a convex lens

(b) Light takes curvature at the edges of the hole

(c) Of rectilinear propagation of light

(d) The hole acts as a concave lens
828: Saka era was introduced by:

(a) Ashoka

(b) Kanishka

(c) Chandragupta Maurya

(d) Harsha Vardhana
829: Diamond and Emerald contain:

(a) Carbon and silicon

(b) Carbon and zinc

(c) Silicon, aluminium and beryllium

(d) Carbon and calcium
830: Which of the following pairs is/are incorrect?

I : Consumer Price Index - Inflation

II : Export concessions - Fiscal policy

III : Imposition of taxes - Economic planning

IV : Income - Standard of living

V : Deficit budgeting - Inflation

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(a) I and V

(b) II and III

(c) III and V

(d) None of (a), (b) and (c) is a correct answer