The ultimate source of energy in an ecosystem is:
A)
Sun
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B)
Producers
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C)
Consumers
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D)
Decomposers
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E)
None of these
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What does the following symbol represent?
A)
Electric bulb
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B)
Electric cell
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C)
Voltammeter
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D)
Ammeter
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E)
None of these
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Consider the following two statements: Statement A: Light travels in a straight line. Statement B: Light is an electromagnetic wave. Which of the following is correct with respect to the above statements?
A)
Statement A only
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B)
Statement B only
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C)
Both statements are correct
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D)
Both statements are incorrect
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E)
None of these
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Which one of the following is S.I. unit of resistivity?
A)
Ohm-meter
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B)
Volt
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C)
Ampere
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D)
Watt
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E)
None of these
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Which of the following chemical reaction is balanced?
A)
\[2{{H}_{2}}+{{O}_{2}}\to 2H{{ }_{2}}O\]
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B)
\[2{{H}_{2}}+{{O}_{2}}\to H{{ }_{2}}O\]
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C)
\[2{{H}_{2}}+3{{O}_{2}}\to 2H{{ }_{2}}O\]
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D)
\[2{{H}_{2}}+2{{O}_{2}}\to 2H{{ }_{2}}O\]
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E)
None of these
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If pH of a solution is 7.6, the solution is:
A)
Basic
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B)
Acidic
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C)
Neutral
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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 the structural formula of propane?
A)
\[H-\underset{\underset{H}{\mathop{|}}\,}{\mathop{\overset{\overset{H}{\mathop{|}}\,}{\mathop{C}}\,}}\,-H\]
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B)
\[H-\underset{\underset{H}{\mathop{|}}\,}{\mathop{\overset{\overset{H}{\mathop{|}}\,}{\mathop{C}}\,}}\,-\underset{\underset{H}{\mathop{|}}\,}{\mathop{\overset{\overset{H}{\mathop{|}}\,}{\mathop{C}}\,}}\,-H\]
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C)
\[H-\underset{\underset{H}{\mathop{|}}\,}{\mathop{\overset{\overset{H}{\mathop{|}}\,}{\mathop{C}}\,}}\,-\underset{\underset{H}{\mathop{|}}\,}{\mathop{\overset{\overset{H}{\mathop{|}}\,}{\mathop{C}}\,}}\,-\underset{\underset{H}{\mathop{|}}\,}{\mathop{\overset{\overset{H}{\mathop{|}}\,}{\mathop{C}}\,}}\,-H\]
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D)
\[H-\underset{\underset{H}{\mathop{|}}\,}{\mathop{C}}\,=\underset{\underset{H}{\mathop{|}}\,}{\mathop{C}}\,\equiv \underset{\underset{H}{\mathop{|}}\,}{\mathop{C}}\,\]
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E)
None of these
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Which one of the following statements is correct about periodic elements?
A)
Elements belonging to groups 1 and 2 are called s-block elements
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B)
Elements belonging to groups 1 and 2 are called p-block elements
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C)
Elements belonging to groups 1 and 2 are called d-block elements
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D)
Elements belonging to groups 1 and 2 are called f-block elements
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E)
None of these
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The transmission of characters from parents to their offsprings is called:
A)
Evolution
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B)
Heredity
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C)
Variation
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D)
All of these
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E)
None of these
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Who is regarded as the father of genetics?
A)
Charles Darwin
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B)
Albert Einstein
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C)
Galileo Galilei
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D)
Gregor Johann Mendel
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E)
None of these
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Focal length of a convex lens is 20 cm. Find the power of the lens.
A)
4 D
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B)
6 D
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C)
20 D
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D)
5 D
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E)
None of these
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In terms of food chain, which of the following belongs to the same trophic level?
A)
Snake and grass
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B)
Grass and tree
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C)
Lizard and elephant
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D)
Lion and zebra
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E)
None of these
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How much work is done in moving a charge of 4 coulombs from a point at 110 volts to a point at 120 volts?
A)
20 joules
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B)
40 joules
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C)
60 joules
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D)
80 joules
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E)
None of these
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Which one of the following is an example of decomposition reaction?
A)
\[2KN{{O}_{3}}\to 2KN{{O}_{2}}+{{O}_{2}}\]
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B)
\[BaC{{l}_{2}}+{{H}_{2}}S{{O}_{4}}\to BaS{{O}_{4}}+2HCl\]
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C)
\[{{C}_{2}}{{H}_{4}}+{{H}_{2}}\to {{C}_{2}}{{H}_{6}}\]
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D)
\[CuS{{O}_{4}}+Fe\to FeS{{O}_{4}}+Cu\]
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E)
None of these
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Which marked part of the given figure shows septum in the human heart?
A)
1
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B)
2
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C)
3
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D)
4
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E)
None of these
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Calculate the total resistance of the circuit given below.
A)
\[5.8\,\Omega \]
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B)
\[4.49\,\,\Omega \]
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C)
\[6.5\,\,\Omega \]
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D)
\[3.5\,\,\Omega \]
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E)
None of these
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The movement of a plant part in response to gravity is known as:
A)
Geotropism
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B)
Chemotropism
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C)
Phototropism
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D)
Hydrotropism
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E)
None of these
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Which one of the following is the oxidising agent in given chemical reaction? \[3Mn{{O}_{2}}+4Al\to 3Mn+2A{{I}_{2}}{{O}_{3}}\]
A)
\[Mn\]
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B)
\[{{O}_{2}}\]
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C)
\[Mn{{O}_{2}}\]
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D)
\[Al\]
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E)
None of these
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When the first generation progeny breed among themselves to produce second generation progeny, then this progeny is called:
A)
\[{{F}_{2}}\] Generation
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B)
\[{{F}_{1}}\] generation
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C)
Recessives
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D)
Dominants
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E)
None of these
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In aerobic respiration, breaking down of pyruvate takes place in which parts of cell?
A)
Cytoplasm
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B)
Mitochondria
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C)
Chloroplast
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D)
Nucleus
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E)
None of these
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The base of a flower to which all parts of a flower are attached is known as:
A)
Sepals
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B)
Petals
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C)
Receptacles
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D)
Stamen
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E)
None of these
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The differences in the characters among the individuals of a species is called?
A)
Evolution
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B)
Heredity
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C)
Variation
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D)
All of these
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E)
None of these
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What has been shown in the following figure?
A)
Magnetic field lines due to current carrying a straight wire
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B)
Magnetic field lines due to current carrying a circular wire
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C)
Magnetic field lines due to a electromagnet
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D)
Magnetic field lines due to a bar magnet
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E)
None of these
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Which one of the following statements is correct? Statement 1: A grassland is an example of a land based ecosystem. Statement 2: A pond is an example of a water based ecosystem.
A)
Statement 1 only
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B)
Statement 2 only
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C)
Both statements are correct
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D)
Both statements are incorrect
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E)
None of these
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In the following food chain, if 100 J of energy is available at the producer level, then the energy transferred to the man is: Plants \[\to \] goat \[\to \] man
A)
10 J
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B)
U
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C)
0.1 J
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D)
100 J
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E)
None of these
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Which of the following is the chemical name of caustic soda?
A)
Sodium hydroxide
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B)
Sodium hydrogen carbonate
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C)
Sodium sulphate
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D)
Sodium hydride
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E)
None of these
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Which of the following is a saturated hydrocarbon?
A)
Methane
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B)
Ethane
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C)
Ethyne
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D)
Propene
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E)
None of these
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A bulb is rated 110 W, 220 V. Find the current drawn by it when it is connected to a \[220-V\] supply.
A)
0.5 A
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B)
1 A
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C)
1.5 A
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D)
2.5 A
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E)
None of these
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Which one the following statements is correct: Statement A: Wings of butterfly and bat are homologous organs. Statement B: Wings of butterfly and bat are analogous organs.
A)
Statement A
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B)
Statement B
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C)
Both statements are correct
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D)
Both statements are incorrect
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E)
None of these
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Which one of the following plant hormones is a growth inhibitor?
A)
Auxin
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B)
Gibberellin
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C)
Cytokinin
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D)
Abscisic acid
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E)
None of these
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Mendeleev classified elements in order of increasing:
A)
Atomic mass
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B)
Atomic number
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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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Calculate the resistivity of the copper wire of length 2 m and area of cross section \[1.7\times {{10}^{-6}}{{m}^{2}}\] has a resistance of \[2\times {{10}^{-2}}\]ohms.
A)
\[1.7\times {{10}^{-9}}ohm\,\,meter\]
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B)
\[1.7\times {{10}^{-7}}ohm\,\,meter\]
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C)
\[1.7\times {{10}^{-8}}ohm\,\,meter\]
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D)
\[1.7\times {{10}^{-6}}ohm\,\,meter\]
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E)
None of these
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Refractive index of light going from air to water is 1.33. Find the refractive index of light going from water to air.
A)
0.75
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B)
1.75
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C)
0.69
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D)
0.65
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E)
None of these
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Which one of the following statements is correct? Statement 1: Ionic bonds are formed by the transfer of electrons from one atom to another Statement 2: Covalent bonds are formed by the transfer of electrons from one atom to another
A)
Statement 1
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B)
Statement 2
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C)
Both statements are correct
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D)
Both statements are incorrect
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E)
None of these
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In which one of the following cell organelles, the process of photosynthesis occurs?
A)
Mitochondria
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B)
Ribosomes
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C)
Chloroplast
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D)
Nucleolus
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E)
None of these
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Which one of the following gases is formed when sodium reacts with dilute hydrochloric acid?
A)
Hydrogen
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B)
Nitrogen
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C)
Oxygen
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D)
Carbon dioxide
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E)
None of these
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Which organ of the body secrets the hormone insulin?
A)
Liver
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B)
Pancreas
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C)
Testes
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D)
Ovaries
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E)
None of these
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Which one of the following statements is correct Statement 1: Budding is a form of asexual reproduction Statement 2: Fragmentation is a form of sexual reproduction
A)
Statement 1
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B)
Statement 2
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C)
Both statements are correct
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D)
Both statements are incorrect
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E)
None of these
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The description of genes present in an organism s known as:
A)
Genotype
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B)
Phenotype
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C)
Homozygous
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D)
Heterozygous
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E)
None of these
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In periodic table, from left to right in a period, the acidic nature of the oxides of elements:
A)
Decreases
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B)
Increases
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C)
Does not change
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D)
First increases then decreases
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E)
None of these
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