Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is 

• Mg< Ca < Cl < P

• Cl < P < Mg < Ca

• P < Cl < Ca < Mg

• P < Cl < Ca < Mg

The reaction,

2A (g) + B (g)  ⇌ 3C (g) + D (g) 

is begun with the concentrations of A and B both at an initial value of 1.00 M. When equilibrium is reached, the concentration of  D is measured and found to be 0.25 M. The value for the equilibrium constant for this reaction is given by the expression

• [(0.75)³ (0.25)] / [(1.00)² (1.00)]

• [(0.75)³ (0.25) ] / [(0.50)²(0.75)]

• [(0.75)³(0.25)] / [(0.50)²(0.75)]

• [(0.75)³(0.25)] / [(0.50)²(0.75)]

The pressure exerted by 6.0 g of methane gas in a 0.03 m³ vessel at 129^o C is (Atomic masses C = 12.01, H = 1.01 and R = 8.314 JK^-1 mol^-1)

• 215216 Pa

• 13409 Pa

• 41648 Pa

• 41648 Pa

4.

Among the following which one has the highest cation to anion size ratio?

• CsI

• CsF

• LiF

• LiF

Three moles of an ideal gas expanded spontaneously into the vacuum. The work done will be

• infinte

• 3 J

• 9 J

• 9 J

Match List I (equation) with List II (types of the process) and select the correct option.

• A	B	C	D
  1	2	3	4

• A	B	C	D
  3	4	2	1

• A	B	C	D
  4	1	2	3

• A	B	C	D
  4	1	2	3

A 0.66 kg ball is moving with a speed of 100 m/s. The associated wavelength will be
(h = 6.6 x 10^-34 Js)

• 6.6 x 10^-32 m

• 6.6 x 10^-34 m

• 1 x 10^-35 m

• 1 x 10^-35 m

In which of the following molecules the central atom does not have sp³ hybridisation?

• CH₄

• SF₄

• BF₄^-

• BF₄^-

Which of the following species is not electrophilic in nature? 

• Cl⁺

• BH₃

• H₃O⁺

• H₃O⁺

Some statement about heavy water are given below

A) Heavy water is used as a moderator in nuclear reactors.

B) Heavy water is more associated than ordinary water.

C) Heavy water is more effective solvent than ordinary

• A and B

• A, B and C

• B and C

• B and C