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Chemistry MCQs Quiz For Entry Test
1. Borax in water is:
Soluble
Immiscible
Insoluble
Sparingly soluble (Answer)
2. Silicon atom is hybridized:
sp3 (Answer)
sp
sp2
dsp4
3. Pb has inert pair of electrons:
Three
One
Two (Answer)
Four
4. Known oxide of carbon is:
C3O2
CO4
CO
CO and CO2 (Answer)
5. Borax is hydrated:
Deca (Answer)
Octa
Penta
Hepta
6. Which is used in navigational equipments?
B
Al (Answer)
Be
Mg
7. Boon Aluminium, Gallium, Indium, and thallium belong to group.
III-A (Answer)
II-A
I-A
IV-A
8. Which is not the form of silica?
None of these (Answer)
Smoky
Rose quartz
Amethyst quartz
9. The molecule has triple bond in it:
CO2
C4O2
CO (Answer)
CO and CO2
10. Formula of cryolite is:
Ca2B6O11.5H2O
Na3AlF6 (Answer)
Al2O4.2H2O
Na2B5O3.10H2O
11. Which element does not belong to III-A group?
Ge (Answer)
Ga
Th
Al
12. Which molecule is disatomic in nature?
CO4
C2O2
CO and CO3
CO (Answer)
13. The least important oxide of carbon is:
CO4
CO and CO2
CO
C3O2 (Answer)
14. The slightly polar oxide of carbon is:
CO (Answer)
CO2
CO and CO2
C2O3
15. Borax occurs a natural deposits as:
Borite
Feldspar
Aluminite
Tincal (Answer)
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