CDS Exam (I)- 2017 - General Knowledge Defence Question Paper

CDS Previous Year Question Papers Question Papers
CDS Exam (I)- 2017 - General Knowledge

CDS Exam (I)- 2017 - General Knowledge Defence Questions

1.
Polynucleotide chain of DNA contains
A.
a nitrogenous base, deoxyribose sugar and phosphate group
B.
a nitrogenous base, ribose sugar and phosphate group
C.
deoxyribose sugar, ribose sugar and phosphate group
D.
a nitrogenous base and phosphate group only
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ANSWER :
A. a nitrogenous base, deoxyribose sugar and phosphate group
2.
The process of copying genetic information from one strand of DNA into RNA is termed as
A.
translation
B.
transcription
C.
replication
D.
mutation
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ANSWER :
B. transcription
3.
AIDS is caused by the Human Immunodeficiency Virus (HIV). The transmission of HIV infection generally occurs through
A.
eating contaminated food and water
B.
transfusion of contaminated blood and blood products
C.
inhaling polluted air
D.
shaking hand with infected person
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ANSWER :
B. transfusion of contaminated blood and blood products
4.
In human body, the cell growth and differentiation are highly controlled and regulated, but in cancer cells
A.
there is breakdown of these regulatory mechanisms leading to formation of benign and malignant tumors
B.
controlled cell division and over-production of genetic material occur
C.
RNA is mutated and produced in less amount
D.
DNA is mutated and produced in less amount
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ANSWER :
A. there is breakdown of these regulatory mechanisms leading to formation of benign and malignant tumors
5.
Most viruses that infect plants possess
A.
single-stranded DNA
B.
single-stranded RNA
C.
double-stranded DNA and RNA
D.
double-stranded RNA only
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ANSWER :
B. single-stranded RNA
6.
Syngamy results in formation of
A.
haploid zygote
B.
diploid zygote
C.
non-motile male gametes
D.
motile male gametes
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ANSWER :
B. diploid zygote
7.
Bleeding of gums, falling of teeth, fragile bones and delayed wound healing occur due to the deficiency of which one of the following vitamins?
A.
Vitamin C
B.
Vitamin K
C.
Vitamin D
D.
Vitamin B
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ANSWER :
A. Vitamin C
8.
When a piece of pure silicon is doped with aluminium, then
A.
the conductivity of the doped silicon piece will remain the same
B.
the doped silicon piece will become n-type
C.
the doped silicon piece will become p-type
D.
the resistivity of the doped silicon piece will increase
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ANSWER :
C. the doped silicon piece will become p-type
9.
Suppose voltage V is applied across a resistance R. The power dissipated in the resistance is P. Now the same voltage V is applied across a parallel combination of three equal resistors each of resistance R. Then the power dissipated in the second case will be
A.
P
B.
3P
C.
\( \frac{P}{3} \)
D.
\( \frac{2P}{3} \)
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ANSWER :
B. 3P
10.
Which one of the following is not a semiconductor?
A.
Silicon
B.
Germanium
C.
Quartz
D.
Gallium arsenide
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ANSWER :
C. Quartz
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