Chemistry Mcqs No 8

There are 15 MCQS.Choose the best option that you find correct.Give all of your Answers in one comment (e.g :1A,2B,3C....)

(1) All are not the sources of SO2 in the atmosphere except :
A. sea sprays
B. household activities
C. municipal wastes
D. fossil fuels

(2) All form oxyacids except :
A. chlorine
B. bromine
C. iodine
D. fluorine

(3) All follow octect rule except :
A. Nitrogen in NH3
B. Phosphorous in PH3
C. Boron in BCl3
D. Oxygen in H2O

(4) Bidentate ligand is :
A. CO
B. NH3
C. H2O
D. None of these

(5) BOD is used as an index of :
A. water pollution
B. air pollution
C. acidity
D. solid waste pollution

(6) SN1 reaction completes in ___ steps.
A. 4
B. 3
C. 2
D. 1

(7) The electrode potential of SHE (Standard Hydogen Electrode) is
A. -1
B.  1
C.  0
D.  2

(8) About 99% of the universe is :
A. solid
B. liquid
C. gas
D. plasma

(9)  The Process in which heat is absorbed from surroundings is :
A. reversible
B. mechanical
C. exothermic
D. endothermic

10) PH of a solution is 8.Its POH will be ;
A. 7
B. 14
C. 6
D. 8

(11) When Kc=1 ,the reaction is ___ completed.
A. 100%
B. 50%
C. 25%
D. 10%

(12) The geometry of NaCl is
A. simple cubic
B. body centered cubic
C. face centered cubic
D. hexagonal

(13) Correct order of strenght of acid is :
A. HF>HCl>HBr>HI
B. HCl>HF>HI>HBr
C. HI>HBr>HCl>HF
D. HBr>HCl>HF>HI

(14) A cubic crystal has ___ centre/s of symmetry.
A. one
B. two
C. three
D. four

15) All are state function except :
A. Temperature
B. Enthalpy
C. Entropy
D. Pressure