1. The atomic
weight of a divalent metal that forms an oxide which contains 28.57 % oxygen is
a.
12 b. 20 c. 24 d. 40
2. The maximum
number of orbitals present in a sub-shell is :
a.
n2 b. 2n2 c. 2l +1 d. 4l + 2
3. In which of
this species octet rule is violated.
a.
CO b.
SO3 c.
AlCl3 d. PCl3
4. Which of
theseis most acidic oxide ?
a.
SiO2
b. P2O5 c.
AlCl3 d. PCl3
5. The number
of electron present in a sub-shell is
a.
NH4Cl b. KCl c.
HCOOK d. NaNO3
6. Which of
these is most acidic oxide ?
a.
Mol. Wt /3 b.
Mol. Wt /4 c. Mol. Wt. / 5 d. Mol. Wt. /6
7. The number
of electron present in 1.7 grams of ammonia is
a.
0.1 NA b. 0.5 NA c. NA d. 1.2 NA
8. Washing
Soda removes hardness by
a.
Precipitation
b. Ion- Exchange c. Complex
formation d. all
9. Which of
this gas is absorbed by FeSO4 solution?
a.
N2O b.
NO c. O2 d. CO2
10. Which of
this can reduce both conc. H2SO4 and FeCl3
solution?
a.
HF b.
HCl c. HBr d. HI
11. Which of
this alloy contains iron ?
a.
Constantan b.
Dutch metal c. Invar d. German Silver
12. In
open-hearth process impurities are removed using
a.
Air b. Haematite c. CO2 d. CO
13. Essential
oils can be purified by
a.
Fractional distillation
b. Steam
distillation
c.
Sublimation
d. Centrifuge
14. Which of
these is a nucleophile ?
a.
CO2 b. FeCl3 c. SO3 d. H2S
15. The
intermediate formed during addition of HBr to propene in the presence of
peroxide is :
a.
Carbocation b.
Carbanion c. free radical d. Carbene
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