ENTRANCE TEST – 2010 | Multiple Questions and Answers

71.	In ‘General Gas Equation PV=nRT’, ‘n’ represents the number of moles of gas. Which of the following represents the relation of ‘n’?

	A.	n = NNA
	B.	n = N/NA
	C.	n = NA/N
	D.	n = N + NA

72.	At triple point of water, the pressure of gas is 2680 Pa, by changing ‘T’ the pressure increases to 4870 Pa. Then ‘T’ is:

	A.	496.38
	B.	438.96 K
	C.	Zero
	D.	496.38 o F

73.	A solenoid 15 cm long has 300 turns of wire. A current of 5 A flows through it. What is the magnitude of magnetic field inside the solenoid?

	A.	75 x 107 T
	B.	60 x 10+3 T
	C.	4π x 10-3 T
	D.	750π x 10+3 T

74.	Due to current in a straight conductor the difference between magnetic field lines

	A.	Increases away from conductor
	B.	Decreases away from conductor
	C.	Increases towards conductor
	D.	Decreases and then increases towards conducto