TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 1
TNPSC
Exam GROUP – I 2013
Science
1. An
alkaline earth metal M forms covalent compounds. It forms water soluble
sulphate MSO4 and water insoluble hydroxide M(OH)2 which
is amphoteric in nature. The metal M is
A) Calcium B) Beryllium
C) Magnesium D) Strontium
Answer: (B)
2. Consider
the following statements:
I. Diamond
is bad conductor of electricity
II. Graphite
is used for making electrodes of electric furnaces
III. Solid
carbon monoxide is known as dry ice.
IV. carbon
dioxide turns moist red litmus slightly blush.
Which of the above statement
is /are correct?
A) I and III B) II
and III
C) I
and II D) III and IV
Answer: (C)
3. Match
List I with List II correctly and select your Answer using the codes
given below:
List
I (Ores) List II
(Metals)
A) Hematite 1. Lead
B) Cinnbar 2. Iron
C) Calamine 3. Mercury
D) Galena 4. Zinc
Codes:
a b c d
A) 1 3 4 1
B) 3 2 1 4
C) 2 4 3 1
D) 4 2 1 3
Answer:
(A)
4. Differentiate
Teratogen from Mutagen
A) Teratogen
is a chemical that causes malformation in an embryo or foetus while Mutagen
causes change in genetic material of the adult
B) Teratogen causes cancer while Mutagen
causes mutation
C) Teratogen
causes heart failure while Mutagen is carcinogenic
D) Teratogen causes abnormality in the
adults while Mutagen affects infants
Answer: (A)
5. Colums
of Bertini in the kidneys of mammals are formed as extensions os
A) Medulla
into cortex
B) Cortex into medulla
C) Medulla
into pelvis
D) Pelvis into ureter
Answer: (B)
6. Which
of the following is/are correctly matched?
i. Arteritics - Inflammation of artery
ii. Occlusion - Closure of blood vessel
iii. Thrombectomy -
Removal of blood clot from a blood vessel
Of
these :
A) All
the three are correct
B) Only (i) is correct
C) Only
(ii) is correct
D) only (iii) is correct
Answer: (A)
7. Which of
the following statements is not associated with biocommunication in animals?
A) They
are sings through chemical molecules
B) It is a mechanism of vocalization as
seen between completing bird species
C) Associated
with social conflict of organism between same species
D) It is production of pheromones as
between various species of insects
Answer: (C)
8. Consider
the following statements:
Assertion
(A) :
On rainy day small
oil film on water show brilliant colours.
Reason (R)
: This is due to polarization of light
Choose
your correct answer:
A) Both
(A) and (R) are individually true and (R) is the correct explanation of (A)
B) Both (A) and (R) are individually true
and (R) is not the correct explanation of (A)
C) (A)
is true but (R) is false
D) (A) is false but (R) is true
Answer: (C)
9. A
particle motion is given by distance - time curve as shown in the fiqure.
The
maximum instantaneous velocity of the particle is around the point.
 |
S
Distance P R
Q
Time
A) P
B) Q
C) R D) S
Answer: (C)
10. Critically
observe the reaction and choose the correct RQ from the options
given
below:
C18 H34 O2 + 25.5O2 18CO2 + 17H2O
The correct RQ of this reaction is
A) 0.071 B) 0.71
C) 7.1 D) 71
Answer: (B)
11. The
sampling rate, (how many samples per second are stored) for a CD is
A) 48.4KHZ B) 22,050 HZ
C) 44.1
KHZ D) 48 KHZ
Answer:
(C)
12. What are
the basic challenges in wireless computer systems?
I. Lower
band width
II. Limited
power
III. Dynamically
changing network
IV. Low
error rate
Of these
A) I,III
£ IV B) I, IV, II
C) IV,
II, I D) I, II, III
Answer:
(D)
13. Which
of the following statements is not correct?
A) An
increase in oxidation number of an element implies that the element has undergone
oxidation
B) An increase in oxidation number of an
element implies that it has undergone reduction
C) The oxidation number of an element can
be a fraction
D) Oxidation number of an element is a
positive or negative integer
Answer:
(B)
14. The
third stage of the Indian Nuclear Power Programme is based on
A) Uranium
B) Plutonium
C) Thorium - Uranium 233 cycle
D) None of these
Answer:
(C)
15. Which
is the non fatal viral disease transmitted by Aedes mosquito?
A) Chikungunya B) Dengue Fever
C) Filariasis D) Malaria
Answer:
(A)
16. Consider
the following statements and choose the correct answer from
the
options given below:
A) Succulence
in halophytes is to store water to be used in future.
B) Succulence
in hydrophytes is due to absorption of more water to
neutralize the effect
of increased entry of salts in the cells.
C) Excess salts at times is deposited on
the surface of leaves
A) (a) and (c) are correct and (b) is wrong
B) (b) is correct and (a) and (c) are wrong
C) (c) is correct and (a) and (b) are wrong
D) (a) is wrong and (b) and (c) are correct
Answer:
(D)
17. Choose
the correct order of increase in the oxidation number of iodine
in
the following compounds.
I2,
HI, HIO4 and ICI
A) I2,
HI, ICI, HIO4
B) HI,
HIO4, ICI, I2
C) HO, I2, ICI, HIO4
D) HIO4, ICI, I2HI
Answer:
(C)
18. Identify:
I. I
cannot be synthesized in the body
II. I
am a PUFA
III. I
am involved in phospholipid synthesis and breakdown of cholesterol
IV. I
inhibit blood clotting and reduce the risk of heart attack.
Who
am I?
A) Non
- essential fatty acid
B) Essential
fatty acid
C) Saturated fatty acid
D) Poly unsaturated fatty acid
Answer:
(B)
19. Consider
the following statements:
I. Glycolysis
is a cellular respiration that occurs in the
mitochondria.
II. Glycolysis
is breaking down of glucose into two molecules of a
compound called pyruvate
A) I
alone is correct
B) II
alone is correct
C) Both
I and II are correct
D) Both
I and II are wrong
Answer:
(B)
20. Gas
lighters work on the basic principle of
A) piezo
- electric effect
B) magnetic
effect
C) thermo
- electric effect
D) electromagnetic
induction
Answer:
(A)
21. Match
the following lists and select the correct answer:
List
I List
II
a) Raman
effect 1. Magnetic field
b) Zeeman
effect 2. Scattering
C) Stark
effect 3. Relative velocity
d) Doppler
effect 4. Electric field
Codes:
a b c d
A) 3 1 2 4
B) 4 3 2 1
C) 2 4 3 1
D) 2 1 4 3
Answer:
(D)
22. Which
of the following statements about hydrosere is true ?
I. The
phytoplankton stage consists of free floating species like Azolla, Lemna
and Wolffia.
II. Forest
stage is the climax community.
III. Second
stage in succession is rooted floating stage.
IV.Woodland
stage is invaded by terrestrial plants.
Of
these:
A) I,
II and IV
B) II
and IV
C) IV
only
D) I,
III and IV
Answer:
(B)
23. Match
the following:
o
a) C 1. Triglyceride
HO
b) (Figure) 2. Unsaturated fatty acid
c) (Figure) 3. Saturated fatty acid
d) (Figure) 4. Phospholipid
Codes
:
a b c d
A) 2 3 1 4
B) 1 4 2 3
C) 3 4 1 2
D) 4 2 1 3
Answer: (C)
24. What
were the colours of contrasting characters of seed coat studied by Mendel among the garden peas?
A) Red
and White
B) Yellow
and Green
C) Grey
and White
D) Pink
and White
Answer:
(C)
25. Who
was not participated in the discovery of Mendel’s experiments in 1900?
A) Devries B) Morgan
C) Correns D) Tschermark
Answer:
(B)
No comments:
Post a Comment