496: Assertion (A): The main constituent of the Liquefied Petroleum Gas is methane.
Reason (R): Methane can be used directly for burning in homes and factories where it cab be supplied through pipelines.
(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 the correct explanation of A
(c) A is true but R is false.
(d) A is false but R is true.
497: Assertion (A) :
An iron ball floats on mercury but gets immersed in water.
Reason (R) :
The specific gravity of iron is more than that of mercury.
(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 false but R is true
498: How many numbers lie between 300 and 500 in which 4 comes only one time?
(A) 99
(B) 100
(C) 110
(D) 120
499: Which of the following republics, besides Russia, are nuclear powers?
1. Ukraine
2. Georgia
3. Belarus
4. Kazakhstan
(a) 1, 2 and 4
(b) 2, 3 and 4
(c) 1, 2 and 3
(d) 1, 3 and 4
500: Consider the following statements in respect of India.s advanced satellite INSAT 4A :
1. INSAT 4A was launched in December, 2005 from New Mexico.
2. The European commercial launch service provider Ariane space was associated with the launch of INSAT 4A.
3. Tata Sky a digital cable service provider is associated with DTH television broadcasting services from INSAT 4A.
Which of the statements given above are correct?
(A) 1 and 3, only
(B) 1 and 2, only
(C) 1, 2 and 3
(D) 2 and 3, only