326: World's longest ruling head of government is from:

(a) Switzerland
(b) Cuba
(c) Zimbabwe
(d) New Zealand
327: The main constituents of pearl are

(a) calcium carbonate and magnesium carbonate

(b) aragonite and conchiolin

(c) ammonium sulphate and sodium carbonate

(d) calcium oxide and ammonium chloride
328: A ball bounces higher at high altitudes than in plains. This is because:

(a) The pressure on higher altitudes is lower than that in plains

(b) Downward pull due to gravity is less at higher altitudes

(c) The rarefied air offers less resistance to the ball

(d) You become more energetic at hills, so greater the force applied, higher goes the ball
329: Match List I with List II and select the correct answer by using the codes given below the lists :

List I-------List II

(Crops)----- (Geographical conditions)

I. Barley----- (A) Hot and dry climate with poor soil
II. Rice----- (B) Cool climate with poorer soil
III. Millets----- (C) Warm and moist climate with high altitude
IV. Tea----- (D) Hot and moist climate with rich soil

Codes:

(a) I-B, II-D, III-A, IV-C
(b) I-C, II-D, III-A, IV-B
(c) I-B, II-A, III-D, IV-C
(d) I-C, II-B, III-D, IV-A
330: Consider the following pictures of a dice :


What is the number opposite of 3 ?

(a) 1
(b) 4
(c) 5
(d) Data insufficient