21: The square root of the cube of this number is the cube of its square root. It is not 1 and it is less than 6. What is it ?
(a) 2
(b) 3
(c) 4
(d) 5
22: Which one of the following distance-time graph (x-t) represents one-dimensional uniform motion ?
(a) (a)
(b) (b)
(c) (c)
(d) (d)
23: Blight - the disease of potato can be cured by:
(a) Diathane
(b) Bordeaux mixture
(c) Dionine T-4
(d) Agrimycin and Ceresan
24: Match List-I (Persons) with List-II (Positions) and select the correct answer using the codes given below the Lists:
List-I List-II
(Persons) (Positions)
(A) B.P. Mishra 1. Executive Director, IMF
(B) Suresh Kalamadi 2. Chairman, Steel Authority of India Ltd.
(C) PrafulPatel 3. President, Indian Olympic Association
(D) V. S. Jain 4. Vice-President, South Asian Region, World Bank
Codes:
A B C D
(a) 4 2 1 3
(b) 1 3 4 2
(c) 4 3 1 2
(d) 1 2 4 3
25: Which of the following is not an alloy?
(a) Brass
(b) Bronze
(c) Steel
(d) Zinc