When 0.01 moles of NaOH are added to a buffer solution, its PH changes from 4.745 to 4.832. What is its?
(A) 0.115
(B) 0.900
(C) 0.015
(D) 0.215
The element having electronic configuration [kr] 4d10, 4f14,5s2,5p6,5d1,6s2 belongs to __________?
(A) S-Block
(B) P-Block
(C) d-Block
(D) f-Block
The law of traids is applicable to__________?
(A) Li, Be, B
(B) F, Cl, Br
(C) Cl, Br, I
(D) Na, K, Rb
Hydrocarbon is formed when Grignard reagent is treated with___________?
(A) H2O
(B) CH3OH
(C) Both a and b
(D) None of the above
Which of the following haloalkane is hydrolysed by SN1 mechanism?
(A) CH3Br
(B) CH3CH2Br
(C) CH3CH2CH2Br
(D) (CH3)3CBr
The density of a gas is 1.964 g dm-3 at 273 K and 76 cm Hg. The gas is _________?
(A) CH4
(B) CO2
(C) C2H4
(D) Xe
Pressure remain constant, at which temperature the volume of gas becomes twice of what it is at 0°C?
(A) 546 °C
(B) 546 K
(C) 200°C
(D) 273 K
In a closed vessel, a gas is heated from 300K to 600 K. The kinetic energy becomes__________?
(A) Double
(B) Same
(C) Half
(D) Four times