Tamil Nadu Civil Services Exam (TNPSC) - Group I- Free
Model Test Series 4- Part 1
1. Select the incorrect statement regarding
Actinomycetes Microbes and their use in medicines.
a) Streptomycin
obtained from Streptomyces Griseus cures urinary infections, TB, Meningitis and
Pneumonia.
b) Aureomycin
obtained from Streptomyces Aureofaciens is used to treat osteomyelitis,
whooping cough and eye infections.
c) Chloromycetin
obtained from Streptomyces Venezuelae cures Typhoid fever.
d) None of the
above
Answer: D
2. In which of the following allotropes of carbon, the
Vanderwaal’s force exists?
a) Diamond
b) Graphite
c) Fullerene
d) Charcoal
Answer: B
3. Match the
Medicinal plants and their uses.
LIST 1 LIST 2
A) Morphine 1. Heart Disease
B) Digoxin 2. Mental and Physical stress releasing
C) Ephedrine 3. Pain killer
D) Ginseng 4. Cough
Codes:
a) 3 1 4 2
b) 1 2 3 4
c) 4 3 2 1
d) 4 1 2 3
Answer: A
4. If Nitrogen is the Solute and the Earth’s soil is
the solvent, then this solution can be classified as:
a) Unsaturated
solution
b) Saturated
solution
c) Supersaturated
solution
d) Suprasaturated
solution
Answer: B
5. Bolting in
plants which is sudden elongation of stem followed by flowering – can be induced
by the use of which of the following plant hormones?
a) Abscicic acid
b) Gibberellin
c) Cytokinin
d) Ethylene
Answer: B
6. The only living cells present in the Xylem Complex
cells are:
a) Tracheids
b) Vessels
c) Fibres
d) Parenchyma
Answer: D
7. Dark respiration is the function of:
a) Peroxisomes
b) Ribosomes
c) Chloroplast
d) Mitochondria
Answer: D
8. Select the incorrect statement regarding Enzymes.
a) Enzymes are
active in small amounts and remain unchanged on completion of the reaction.
b) They are very
sensitive to heat.
c) Their catalytic
property is independent of the pH.
d) They are
sensitive to inhibitors.
Answer: C
9. Which of the following is used as Antifreeze in
automobile radiators?
a) Methanol
b) Methanal
c) Ethanol
d) Ethanal
Answer: C
10. Industrial Preparation of Sulphur
a) Contact Process
b) Haber process
c) Ostwald’s
process
d) Frasch Process
Answer: D
11. Calamine is the ore of:
a) Copper
b) Zinc
c) Iron
d) Aluminium
Answer: B
12. Diffusion of a substance from one place to another
is inversely proportional to:
a) The
concentration of the substance
b) The size of the
substance
c) The temperature
of the medium
d) The area of the
diffusion pathway.
Answer: B
13. The function of the nucleus within a cell was first
described by:
a) Robert Feulgen
b)Hertwig
c) Robert Brown
d) Karl Nageli
Answer: D
14. External digestion followed by absorption is the
nutrition mode observed in:
a) Bacteria
b) Virus
c) Fungi
d) Animals
Answer: C
15. Which of the following fungi is considered as
Edible fungi?
a) Agaricus
Bisporus
b) Neurospora Crassa
c) Penicillium
Notatum
d) Claviceps Purpurea
Answer: A
16. If the Kelvin scale of temperature indicates 343
Kelvin, then what is its equivalent in Celsius scale?
a) 100
b) 70
c) 616
d) -70
Answer: B
17. If a 2 kg substance at 22 degree Celsius requires
1200 joules of energy to raise its temperature to 26 degree Celsius, what is
the specific heat capacity of the substance?
a) 1200
b)150
c) 250
d) 600
Answer: B
18. The cell organelle Plastids in plants that stores
oil are called:
a) Amyloplasts
b) Aleuroplasts
c) Proteinoplasts
d) Elaioplasts
Answer: D
19. Parboiled
rice is recommended for human consumption than polished rice, to prevent:
a) Beri beri
b) Dermatitis
c) Riboflavinosis
d) Pellagra
Answer: A
20. The gravitational force between the sun and the
earth which keeps the earth in orbit acts as the:
a) Centripetal
force
b) Centrifugal
force
c) Attractive force
d) Cohesive force
Answer: A
21. Most of the sex linked characters in humans are:
a) Y linked
b) XY linked
c) X linked
d) all the above
Answer: C
22. The Hypophysis / Pituitary gland in the brain is
connected through the infundibulum to the:
a) Adeno Hypophysis
b) Neuro Hypophysis
c) Hypothalamus
d) Carpora
Quadrigemina
Answer: C
23. The length of a second’s pendulum (pendulum whose
time period is 2 Sec) is:
a) .995 m
b) 9.95 cm
c) 99.5 m
d) 995 cm
Answer: A
24. The inability of a body to change its state of rest
or of uniform motion is termed as:
a) Impulse
b) Inertia
c) Momentum
d) Newton
Answer: B
25. When a sound wave passes through a medium, the
particles of the medium vibrate along the direction of propagation of the wave.
Such a wave is called:
a) Mechanical wave
b) Electromagnetic
wave
c) Transverse wave
d) Longitudinal
wave
Answer: D
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Answer: C
49. "Vilayat
91" is the naval exercise conducted by
a) China
b) Iran
c) Iraq
d) UAE
Answer: B
50. Which of the
following are correct about the UNESCO World Heritage Sites of India
1. There are 29 world heritage sites in India
2. There are Five sites under Natural World Heritage sites category
3. The recent entry to the list is Western Ghats
Codes
a) All of the above
b) 1 & 2 only
c) 2 & 3 only
d) 1 & 3 only
Answer: D
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