Group III A and IVA Elements Mcqs
Our collections of Multiple choice questions and answers focuses on study of Group III A and IVA Elements in Chemistry. These questions are chosen from a collection of most authoritative and best reference books on Chemistry. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate Group III A and IVA Elements in Chemistry comprehensively.
2. Boron in soil has been considered micronutrient for
Soil porocity
Proper growth of plants
Alkalinity of soil
All
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3. One of the outstanding features of boron is its ability to form
Molecular addition compounds
Molecular crystals
Semiconductors
Ionic compounds
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4. Substance which is found in dried up lakes of Tibet and California is
Tincal
Boric acid
Calcium carbonate
Colemanite
5. Borax is a white crystalline solid and it is
More soluble in cold water
More soluble in hot water
Insoluble in water
Soluble only in organic solvents
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6. Which of the following does not give Borax bead test?
Cu
Cr
Ni
A1
7. Special features of borate glass is that it is
Heat resistant
Low melting
Used to prepare chemical garden
Green in colour
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8. The metal which is used in thermite process because of its activity is
Iron
Copper
Aluminium
Zinc
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9. Aluminium oxide is
Acidic oxide
Basic oxide
Amphoteric oxide
It does not exists
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10. Which of the following shows inert pair effect?
Boron
Carbon
Silicon
Tin
11. Which electronic configuration corresponds to an element of group IIIA?
1s2 2s2 2p3
1s2 2s2 2p6 3s2 3p1
1s2 2s2 2p4
1s2 2s2 2p6 3s2 3p6 4s2 3d1
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12. Tincal is a mineral of
A1
Si
B
C
13. In network of silica (SiO2) each silicon atom is surrounded by _________ atoms of osygen
4
2
1
6
14. Which one of the following is not a semiconductor?
Si
Ge
Se
Sn
15. Orthoboric acid is 2.6% soluble in water at 40?C and ________at 107?C.
26%
27%
37%
<2.6%