In a food chain which one of the following constitutes second trophic level?
A)
Producers
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B)
Herbivores
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C)
Carnivores
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D)
Omnivores
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E)
None of these
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The Chipko Andolan is associated with:
A)
Tigers
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B)
turtles
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C)
Trees
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D)
tomatoes
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E)
None of these
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The ordinary sulphur exists as:
A)
\[S\]
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B)
\[{{S}_{2}}\]
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C)
\[{{S}_{4}}\]
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D)
\[{{S}_{8}}\]
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E)
None of these
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Which one of the following pairs will give displacement reaction?
A)
\[NaCI\]solution and copper metal
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B)
\[MgC{{I}_{2}}\] solution and aluminium metal
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C)
\[FeS{{O}_{4}}\] solution and silver metal
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D)
\[AgN{{O}_{3}}\] solution and copper metal
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E)
None of these
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Which one of the following statements is correct about geothermal energy?
A)
Geothermal plants can operate round the clock, unlike those based on solar and tidal energy
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B)
Geothermal energy is almost pollution free
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C)
It is cheaper to run geothermal plant than a coal-based plant
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D)
It enables us to save our fossil fuels
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E)
All of these
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In the following food chain, 10000 kilocalories of energy is available at the producer level, then calculate the energy transferred to the peacock as food. Grass \[\to \] Rat \[\to \] Snake \[\to \] peacock
A)
10 kilocalories
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B)
100 kilocalories
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C)
1000 kilocalories
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D)
10000 kilocalories
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E)
None of these
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Which one of the following devices directly converts solar energy into electrical energy?
A)
Solar cell
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B)
Solar cooker
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C)
Wind turbine
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D)
Biogas plant
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E)
None of these
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A student has difficulty in reading the blackboard while sitting in the last row. What could be the defect he is suffering from and which type of lens is required to correct the defect?
A)
Myopia, convex lens
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B)
Hypermetropia, concave lens
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C)
Hypermetropia, convex lens
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D)
Myopia, concave lens
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E)
None of these
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Which one of the following metals has the lowest density?
A)
Copper
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B)
Gold
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C)
Potassium
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D)
Iron
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E)
None of these
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A current is passed through a resistor for some time. It produces 400 cal of heat in this period. If the current is doubled, how much heat will be produced for the same duration?
A)
400 cal
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B)
800 cal
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C)
1200 cal
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D)
1600 cal
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E)
None of these
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Look at the following figure and choose the option which is correct about the nature of the image.
A)
Virtual, larger, erect
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B)
Virtual, same-sized, inverted
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C)
Real, same-sized, inverted
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D)
Real, point-sized, inverted
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E)
None of these
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Which one of the following statements is correct?
A)
Buckminsterfullerene is an allotrope of sulphur
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B)
Buckminsterfullerene is liquid at room temperature
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C)
Buckminsterfullerene is made up of 60 sulphur atoms joined together
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D)
Buckminsterfullerene gives nitrogen oxide on burning in oxygen
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E)
None of these
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The magnetic field lines due to a straight wire carrying a current are:
A)
Straight
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B)
circular
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C)
Parabolic
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D)
elliptical
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E)
None of these
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Name the hydrocarbon whose structural formula has been given.
A)
Cyclohexane
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B)
Cyclopentane
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C)
Cyclobutane
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D)
Benzene
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E)
None of these
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A concave mirror forms an inverted image of an object placed at a distance of 12 cm from it. If the image is twice as large as the object, where is it formed?
A)
The image is formed at a distance of 24 cm in front of the mirror
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B)
The image is formed at a distance of 12 cm in front of the mirror
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C)
The image is formed at a distance of 24 cm behind the mirror
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D)
The image is formed at a distance of 12 cm behind the mirror
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E)
None of these
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Mendeleev classified elements in order of increasing:
A)
Atomic number
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B)
atomic mass
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C)
Chemical reactivity
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D)
valency
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E)
None of these
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With respect to air, refractive indices of water and benzene are 1.33 and 1.50 respectively. Calculate the refractive index of benzene with respect to water.
A)
2.6
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B)
1.13
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C)
0.9
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D)
2.11
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E)
None of these
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Which one of the following statements is correct? \[ZnO+CO\to Zn+C{{O}_{2}}\]
A)
\[ZnO\]is being oxidized
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B)
\[CO\]is being reduced
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C)
\[C{{O}_{2}}\]is being oxidized
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D)
\[ZnO\]is being reduced
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E)
None of these
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Write the balanced chemical equation for the reaction 'Calcium hydroxide + Carbon dioxide \[\to \]Calcium carbonate + Water'.
A)
\[6Ca{{(OH)}_{2}}+C{{O}_{2}}\to 6CaC{{O}_{3}}+12{{H}_{2}}O\]
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B)
\[2Ca{{(OH)}_{2}}+3C{{O}_{2}}\to 4CaC{{O}_{3}}+6{{H}_{2}}O\]
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C)
\[Ca{{(OH)}_{2}}+C{{O}_{2}}\to CaC{{O}_{3}}+{{H}_{2}}0\]
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D)
\[Ca{{(OH)}_{2}}+6C{{O}_{2}}\to CaC{{O}_{3}}+6{{H}_{2}}0\]
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E)
None of these
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Find the odd one from the following.
A)
Propyne
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B)
Ethane
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C)
Butene
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D)
Hexyne
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E)
None of these
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Which one of the following pairs of elements is likely to have similar chemical behaviour?
A)
Sodium and aluminium
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B)
Argon and potassium
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C)
Boron and germanium
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D)
Nitrogen and phosphorus
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E)
None of these
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In human females the fertilized eggs gets implanted in the:
A)
Uterus
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B)
vagina
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C)
Ovary
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D)
ureter
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E)
None of these
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Which one of the following glands is present in our brain?
A)
Pineal gland
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B)
Thyroid gland
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C)
Thymus gland
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D)
Adrenal gland
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E)
None of these
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Which one of the following parts of brain is the centre of vision in birds?
A)
Olfactory lobes
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B)
Optic lobes
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C)
Pons
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D)
Cerebellum
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E)
None of these
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The forelimbs of man, cat, bat and whale are:
A)
Analogous organs
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B)
homologous organs
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C)
Distinct organs
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D)
vegetative organs
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E)
None of these
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Which one of the following organisms reproduces by the method of binary fission?
A)
Euglena
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B)
Amoeba
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C)
Paramecium
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D)
All of these
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E)
None of these
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The gene which decides the appearance of an organism even in the presence of an alternative gene is known as:
A)
dominant gene
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B)
recessive gene
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C)
hybrid gene
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D)
monohybrid gene
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E)
None of these
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The reaction between iron nails and copper sulphate solution is:
A)
Decomposition reaction
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B)
Double displacement reaction
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C)
Displacement reaction
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D)
Combination reaction
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E)
None of these
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Which of the following set-up will give a positive result for starch test after boiling the leaf in alcohol?
A)
A
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B)
B
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C)
C
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D)
D
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E)
None of these
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Find out the reading of ammeter and voltmeter in the circuit given below.
A)
Ammeter reading = 0.5 A, Voltmeter reading = IV
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B)
Ammeter reading = 1 A, Voltmeter reading = 0.5V
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C)
Ammeter reading = 0.5 A, Voltmeter reading = 2V
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D)
Ammeter reading = 3 A, Voltmeter reading = 5V
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E)
None of these
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A blue litmus paper was first dipped in dil. \[HCI\]and then in dil. \[NaOH\]solution. It was observed that the colour of the litmus paper:
A)
Changed to red.
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B)
Changed first to red and then to blue.
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C)
Changed blue to colourless.
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D)
remained blue in both the solutions.
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E)
None of these
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pH values of four solutions A, B, C and D are 7, 8, 9, and 10 respectively. Put them in a sequence according to their nature.
A)
Acidic, acidic, neutral, basic
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B)
Acidic, neutral, basic, basic
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C)
Acidic, acidic, acidic, neutral
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D)
Neutral, basic, basic, basic
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E)
None of these
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Which one of the following is correct about the current I through the circuit and potential difference V across the resistor R, if one increases the number of cells in the given circuit?
A)
V will increase, I will decrease.
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B)
I will increase, V will decrease.
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C)
Both I and V will increase.
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D)
Only V will increase and I will remain unchanged.
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E)
None of these
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Which structure out of P, Q, R and S marked in the given diagram of the respiratory system should be labelled as trachea?
A)
P
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B)
Q
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C)
R
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D)
S
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E)
None of these
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Complete the passage of inhaled air.
A)
Bronchioles, trachea, alveolar sac
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B)
Trachea, bronchioles, alveolar sac
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C)
Bronchioles, alveolar sac, Trachea,
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D)
Alveolar sac, trachea, bronchioles,
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E)
None of these
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Which one of the following statements is correct?
A)
Right hand thumb rule is used to find the direction of magnetic field in a coil of wire and the electric current in a straight conductor.
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B)
Fleming's left hand rule is used to find the direction of force exerted on a current carrying conductor in a magnetic field as in electric motor.
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C)
Fleming's right hand rule is used to find the direction of induced current in a closed circuit in changing magnetic field as in electric generator.
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D)
All of these
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E)
None of these
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Which one of the following is an example of reflex action of our body?
A)
When we see a speeding car moving towards us, we move aside.
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B)
We withdraw our hands on touching very hot substance.
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C)
We close our eyes on seeing direct sun or extremely bright source of light.
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D)
We shiver on feeling cold.
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E)
All of these
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The steps involved in making a slide of epidermal peel of leaf are given as follows: I. pull out a thin peel from the lower surface of the leaf. II. Place a drop of glycerin on the slide. III. Stain the peel in safranin. IV. Place the stained peel of the glycerin. V. remove the extra stain by washing with water. VI. Place the cover slip over the peel. Which one is the correct sequence of steps to be followed?
A)
I, II, III, IV, V, VI
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B)
I, III, V, II, IV, VI
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C)
I, III. IV, II, V, VI
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D)
I, II, IV, III, V, VI
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E)
None of these
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Which structure out of L, M, N and 0 marked in the given diagram of excretory system should be labelled as ureter?
A)
L
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B)
M
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C)
N
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D)
O
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E)
None of these
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The given diagram shows the pathway of reflex arc. Which option is correct for X and Y?
A)
x = inter neurons, y = sensory neurons
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B)
x= motor neurons, y = sensory neurons
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C)
x= sensory neurons, y = motor neurons
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D)
x= motor neurons, y = inter neurons
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E)
None of these
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