721: Assertion (A) :
To dilute sulphuric acid, acid is added to water and not water to acid.
Reason (R) :
Specific heat of water is quite large.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is not a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
722: Two important characteristics of a hypothesis are that it should be testable and that it should be stated in a manner that it can be refuted. Which one of the following hypotheses, fulfils these characteristics ?
(a) Intelligent persons have good memory
(b) Some birds are animals
(c) Some businessmen are dishonest
(d) All men are mortal
723: Match List I (Cricketer) with List II (country) and select the correct answer using the codes given below the lists:
List I List II
(Cricketer) (Country)
A. Barry Richards 1. England
B. Ted Dexter 2. West Indies
C. Alan Davidson 3. South Africa
D. Charli Griffith 4. New Zealand
5. Australia
Codes:
A B C D
(a) 3 2 5 1
(b) 5 1 4 2
(c) 3 1 5 2
(d) 5 2 4 1
724: Finance Commission is appointed for:
(a) Passing the money bills
(b) Approving money bills
(c) Drafting the budget
(d) Making recommendations to the President regarding the distribution between the Union and the States of the net proceeds of the taxes
725: Among the following organisms, which one does not belong to the class of other three ?
(a) Crab
(b) Mite
(c) Scorpion
(d) Spider