TNPSC Group 2 Exams Study Materials
176) consider the following Statements:Assertion (A): The Primary physiological effects of auxin in plants is to
Stimulate
The ‘elongation of cells is shoots’
Reason (R): Dormancy of buds can be broken by auxin treatment
Now select your answer according to the coding scheme given below:
A) Both (A) and (R) are true and (R) is the correct explanation of (A)
B) Both (A) and (R) are true but (R) is not the correct explanation of (A)
c) (A) is true, but (R) is false
d) (A) is false, but (R) is true.
177) consider the following Statements:
Assertion (A): Green vegetables soyabean oil, etc, are chief sources of
Vitamin K.
Reason (R) : Vitamin K prevents erosion of the skin in higher animals.
Now select your answer according to the coding scheme given below:
A) Both (A) and (R ) are true and (R ) is the correct explanation of (A )
B) Both (A) and (R ) are true but (R ) is not the correct explanation of (A)
c) ( A) is true, but (R ) is false
d) (A) is false, but (R )is true.
TNPSC Group 2 Exams Study Materials with answers
178) the cell responsible for fixing atmosphere nitrogen in blue green algae isa) Akinetes b) Heterocysts c) Aplanospores d) Parthenospores
179) the synthesis of glucose from fat is called?
A) Glycolysis b) T.C. A c) Gluconeogenesis d) Saponification
180) which one of the following is not correctly matched?
A) Vitamin ‘A’ - Fat soluble
B) Vitamin C -Water soluble
C) Vitamin B -Water soluble
D) Vitamin D -Water soluble
181) Drinking Soda is
a) Neutral b) Amphoteric c) basic d) acidic
182) which of the following is found in kindly stone?
a) Ammonium Oxalate b) Calcium Oxalate c) Potassium Oxalate
d) Sodium Oxalate
183) which of the following is a laughing gas?
a) Carbon monoxide b) Carbon dioxide c) Nitrous oxide
d) Sulphur dioxide
184) Coating of zinc over iron article is known as
a) Galvanization b) Electroplating c) Electro refining d) Etching
185) Tincture of iodine is
a) Iodine b) Iodine and iodoform c) Iodine and potassium iodide d) iodoform
186) the protein content is of the order
a) Soyabean> egg yolk> rice b) egg yolk > Soyabean> rice
c) Egg yolk> rice > Soyabean d) Soyabean> rice > egg yolk
187) which one of the following is correctly matched?
a) Liquid gold - Lead
b) Liquid Silver – Mercury
c) Aqua regia - Silver
d) Green Silver – Copper
188) Match List I with List II correctly and select your answer using the codes given
Below:
List I List II
a) Lead tetraethyl 1) Global warming
b) Liquid hydrogen 2) Antiknocking agent
c) Hydrogen peroxide 3) Rocket fuel
d) Carbon dioxide 4) Bleaching agent
Codes:
A b c d
A) 2 1 3 4
B) 1 3 2 4
C) 2 4 3 1
D) 2 3 4 1
189) consider the following Statements
Assertion (A): Silver articles on exposure to air become black.
Reason ( R): Silver is oxidized to silver oxide.
Now select your answer according to the coding scheme given below:
A) Both (A) and (R ) are true and (R ) is the correct explanation of (A )
B) Both (A) and (R ) are true but (R ) is not the correct explanation of (A)
c) (A) is true, but (R ) is false d) (A) is false, but (R )is true.
191) Semi conducting property of silicon is due to
a) Its positive temperature coefficient of resistance
b) Its negative temperature coefficient of resistance
c) Wide band gap d) Narrow band gap
192) light from the sun reaches the earth in
A) 45 minute b) 8 minute c) 4 minute d) 2 minute
193) which of the following is used in electric heaters and irons?
a) Tungsten b) Steel c) Copper D) Nichrome
194) which one of the following instruments is used to measure the speed of water trough
A pipe?
a) McLeod gauge b) Pressure gauge c) Screw gauge d) Venturimeter
195) the distance of stars is measured by 0 the unit
a) Kilometer (km) b) angstrom (A) unit c) light year d) giga metre
196) Theory of relativity was proposed by which one of the following scientist in the year
1905?
a) Rutherford b) Thomson c) Bohr d) Einstein
197) the moderator used in the nuclear reactor at madras atomic power station in
Kalpakkam is
a) Water (H2O) B) graphite c) Heavy water (D2O) d) none
198) Radio carbon in nature is produced as a result of
a) The action of UV rays on ordinary carbon
b) The action of IR rays on ordinary carbon
c) The action of cosmic rays on earth’s atmospheric nitrogen
d) The action of X- rays on ordinary carbon
199) the speed of sound is higher in which one of the following mediums?
a) Liquids b) Solids c) Gases d) Same in all
200) the huge amount of energy released in nuclear fission and fusion reactions is due to
The conversion of
a) Chemical energy into heat energy
b) Protons into neutrons
c) Mass into energy, according to Einstein’s equation
d) Mechanical energy into heat energy.
