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Q1951
#1951
Chemistry → Hydrogen and Water → Properties of Hydrogen
·
Moderate
Which one of the following statements about dihydrogen
(
H
2
)
(H_2)
(
H
2
)
is not correct ?
Add
Playbook: Hydrogen and Water
A
H
2
H_2
H
2
is lighter than air and insoluble in water.
B
H
2
H_2
H
2
is inert at room temperature due to high H – H bond dissociation enthalpy.
C
H
2
H_2
H
2
reacts with alkali metals at high temperature to yield metal hydrides.
D
A mixture of
N
O
2
NO_2
N
O
2
and
H
2
H_2
H
2
is known as Syngas.
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[Q61 · Apr · 2021]
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Q1952
#1952
Chemistry → Atomic Structure and Periodic Classification → Periodic Trends, Valency and Atomicity
·
Easy
Which of the following sets of elements has the same valency ?
Add
Playbook: Atomic Structure and Periodic Classification
A
Na, Mg, Ca
B
Na, Mg, Al
C
Mg, Ca, K
D
Mg, Ca, Ba
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[Q62 · Apr · 2021]
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Q1953
#1953
Physics → Heat and Thermodynamics → Temperature and Thermometry
·
Easy
Which one of the following is the lowest possible temperature ?
Add
Playbook: Heat and Thermodynamics
A
0° Celsius
B
– 073° Celsius
C
– 173° Celsius
D
– 273° Celsius
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[Q63 · Apr · 2021]
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Q1954
#1954
Physics → Heat and Thermodynamics → Temperature and Thermometry
·
Moderate
Numerically two thermometers, one in Fahrenheit scale and another in Celsius scale shall read same at
Add
Playbook: Heat and Thermodynamics
A
– 40°
B
0°
C
– 273°
D
100°
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[Q64 · Apr · 2021]
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Q1955
#1955
Physics → Light and Optics → Reflection and Mirrors
·
Easy
The image we see in plane mirror is
Add
Playbook: Light and Optics
A
real and thus can be photographed.
B
virtual and nearer than the object.
C
virtual and is laterally inverted.
D
real but cannot be photographed.
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[Q65 · Apr · 2021]
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Q1956
#1956
Physics → Light and Optics → Light Phenomena and Spectrum
·
Easy
Which one of the following colours may be obtained by combining green and red colours ?
Add
Playbook: Light and Optics
A
Blue
B
Magenta
C
Pink
D
Yellow
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[Q66 · Apr · 2021]
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Q1957
#1957
Physics → Light and Optics → Light Phenomena and Spectrum
·
Easy
Which of the following are the primary colours of light ?
Add
Playbook: Light and Optics
A
Yellow, Red and Green
B
Blue, Red and Green
C
Violet, Red and Yellow
D
Indigo, Violet and Green
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[Q67 · Apr · 2021]
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Q1958
#1958
Physics → Light and Optics → Lenses and Lens Formula
·
Moderate
According to the New Cartesian Sign Convention, which one of the following is correct in respect of the formula
1
f
=
1
v
+
1
u
\frac{1}{f} = \frac{1}{v} + \frac{1}{u}
f
1
=
v
1
+
u
1
, where symbols have their usual meanings ?
Add
Playbook: Light and Optics
A
It applies only to spherical mirrors.
B
It applies only to spherical lenses.
C
It applies to spherical mirrors as well as spherical lenses.
D
It is an invalid formula.
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[Q68 · Apr · 2021]
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Q1959
#1959
Biology → Cell Biology → Cell Organelles and Functions
·
Easy
Movement of materials to different parts of cytoplasm and nucleus is generally carried out by
Add
Playbook: Cell Biology
A
Ribosomes.
B
Mitochondria.
C
Lysosomes.
D
Endoplasmic reticulum.
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[Q69 · Apr · 2021]
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Q1960
#1960
Biology → Cell Biology → Cellular Respiration and ATP
·
Moderate
In mitochondria, ATP synthesizing chemical reactions take place in the
Add
Playbook: Cell Biology
A
Outer membrane.
B
Matrix.
C
Inner membrane.
D
DNA of mitochondria.
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[Q70 · Apr · 2021]
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Q1961
#1961
Biology → Human Physiology → Connective and Epithelial Tissues
·
Moderate
Squamous epithelial cells are found in the inner lining of
Add
Playbook: Human Physiology
A
Oesophagus.
B
Small intestine.
C
Ducts of salivary gland.
D
Kidney.
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[Q71 · Apr · 2021]
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Q1962
#1962
Biology → Plant Biology → Plant Tissues and Meristems
·
Easy
Transformation of meristematic cells into specific permanent tissues occurs by the process of
Add
Playbook: Plant Biology
A
Cell differentiation.
B
Cell division.
C
Cell multiplication.
D
Cell regeneration.
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[Q72 · Apr · 2021]
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Q1963
#1963
Biology → Plant Biology → Transpiration, Tropisms and Plant Processes
·
Easy
The gaseous product of a process in plants is a requirement for another vital process that releases energy. Given below are four combinations of the process and product. Identify the correct answer.
Add
Playbook: Plant Biology
A
Respiration and Nitric oxide
B
Transpiration and Water vapour
C
Photosynthesis and Oxygen
D
Germination and Carbon dioxide
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[Q73 · Apr · 2021]
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Q1964
#1964
Biology → Plant Biology → Transpiration, Tropisms and Plant Processes
·
Hard
In a dicot pot herb, vaseline/vegetable oil was applied on the upper surface of one leaf (Experimental leaf 1) and on the lower surface of another leaf (Experimental leaf 2). Vaseline/Vegetable oil was not applied on the control leaf. The plant was deliberately not watered for several days. Which leaf will dry up last ?
Add
Playbook: Plant Biology
A
Experimental leaf 1
B
Experimental leaf 2
C
Control leaf
D
All the leaves will dry up simultaneously
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[Q74 · Apr · 2021]
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Q1965
#1965
Physics → Light and Optics → Light Phenomena and Spectrum
·
Moderate
Which one of the following statements is not correct for light rays ?
Add
Playbook: Light and Optics
A
Light travels at different speeds in different media.
B
Light travels at almost 300 million metres per second in air.
C
Light speeds down as it leaves a water surface and enters the air.
D
Light speeds up as it leaves a glass surface and enters the air.
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[Q75 · Apr · 2021]
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Q1966
#1966
Physics → Light and Optics → Prisms and Dispersion
·
Moderate
A glass prism splits white light into different colours. This phenomenon is called dispersion of light by prism. Which one of the following statements is correct ?
Add
Playbook: Light and Optics
A
Red light will deviate the most and it is because of the reflection of light.
B
Violet light will deviate the most and it is because of the refraction of light.
C
Red light will deviate the most and it is because of the refraction of light.
D
Violet light will deviate the most and it is because of the reflection of light.
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[Q76 · Apr · 2021]
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Q1967
#1967
Physics → Electricity and Magnetism → Electric Current and Ohm's Law
·
Easy
A current of 1·0 A is drawn by a filament of an electric bulb for 10 minutes. The amount of electric charge that flows through the circuit is
Add
Playbook: Electricity and Magnetism
A
0·1 C
B
10 C
C
600 C
D
800 C
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[Q77 · Apr · 2021]
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Q1968
#1968
Physics → Electricity and Magnetism → Electrical Power, Energy and Heating
·
Easy
Which one of the following formulas does not represent electrical power ?
Add
Playbook: Electricity and Magnetism
A
I
2
R
I^2 R
I
2
R
B
I
R
2
IR^2
I
R
2
C
V
I
VI
V
I
D
V
2
/
R
V^2/R
V
2
/
R
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[Q78 · Apr · 2021]
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Q1969
#1969
Physics → Sound → Sound Behaviours — Reflection, Echo, Reverberation, Beats
·
Easy
The sound created in a big hall persists because of the repeated reflections. The phenomenon is called
Add
Playbook: Sound
A
Reverberation.
B
Dispersion.
C
Refraction.
D
Diffraction.
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[Q79 · Apr · 2021]
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Q1970
#1970
Physics → Modern Physics → Atomic Structure
·
Moderate
When light is scattered by a molecule and the frequency of the scattered light is changed, this phenomenon is called
Add
Playbook: Modern Physics
A
Rayleigh scattering.
B
Raman effect.
C
Photoelectric effect.
D
Rutherford scattering.
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[Q80 · Apr · 2021]
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Q1971
#1971
Chemistry → Matter and Its States → Colloids and Suspensions
·
Moderate
Which one of the following statements about the cleansing action of soap is not true ?
Add
Playbook: Matter and Its States
A
The oil and dirt gets collected in the centre of the micelle.
B
Soap micelles scatter light.
C
Soaps are ammonium salts of long chain carboxylic acids.
D
Soap forms insoluble precipitates with the calcium and magnesium ions in hard water.
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[Q81 · Apr · 2021]
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Q1972
#1972
Chemistry → Chemical Reactions → Types of Reactions: Combination, Decomposition, Displacement
·
Easy
Hydrogenation of vegetable oils using nickel catalyst is an example of
Add
Playbook: Chemical Reactions
A
Substitution reaction.
B
Elimination reaction.
C
Addition reaction.
D
Free-radical polymerization.
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[Q82 · Apr · 2021]
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Q1973
#1973
Chemistry → Carbon and Its Compounds → Allotropes of Carbon
·
Easy
Which one of the following materials is not an allotrope of carbon ?
Add
Playbook: Carbon and Its Compounds
A
Diamond
B
Graphene
C
Fly ash
D
Fullerene
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[Q83 · Apr · 2021]
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Q1974
#1974
Chemistry → Chemical Reactions → Specific Reactions: Precipitation, Electrolysis and Daily Life
·
Moderate
Which one of the following reactions does not result in the evolution of hydrogen gas ?
Add
Playbook: Chemical Reactions
A
Reaction of zinc metal with dilute sulphuric acid solution
B
Mixing water to Plaster of Paris
C
Heating zinc metal with sodium hydroxide solution
D
Reaction of potassium metal with water
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[Q84 · Apr · 2021]
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Q1975
#1975
Chemistry → Acids, Bases and Salts → Common Acids: Names, Formulas and Uses
·
Hard
Which one of the following acids is predominantly found in tomatoes ?
Add
Playbook: Acids, Bases and Salts
A
Acetic acid
B
Tartaric acid
C
Oxalic acid
D
Lactic acid
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[Q85 · Apr · 2021]
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