Look at the following figure and choose option which is correct about the image.
A)
Real, erect and diminished
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B)
Real, inverted and diminished
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C)
Real, inverted and magnified
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D)
Virtual, inverted and magnified
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E)
None of these
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An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position of the image.
A)
6 cm behind the mirror
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B)
12 cm behind the mirror
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C)
6 cm in front of mirror
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D)
12 cm in front of mirror
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E)
None of these
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The speed of light in water is \[2.25\times {{10}^{8}}m/s\]and that of glass is \[2.0\times {{10}^{8}}m/s.\]Calculate the refractive index of water with respect to glass.
A)
1.125
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B)
0.89
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C)
8.09
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D)
0.02
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E)
None of these
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A pin which is 2 cm long is placed at a distance of 16 cm from a convex lens. Assuming it to be perpendicular to the principle axis, find the size of the image, nature of the image and distance between the lens and the image if the focal length of the lens is 12 cm.
A)
Size= 6 cm. Nature = real and inverted, Distance between image and lens =48cm
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B)
Size = 8 cm, Nature = virtual and erect. Distance between image and lens = 48cm
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C)
Size = 48 cm, Nature = real and inverted, Distance between image and lens = 6cm
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D)
Size = 8 cm. Nature = real and inverted. Distance between image and lens= 6cm
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E)
None of these
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Splitting of white light into different colors on passing through a glass prism is known as:
A)
Reflection of light
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B)
Refraction of light
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C)
Diffraction of light
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D)
Dispersion of light
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E)
None of these
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If 100 J of work is done in moving a charge of 5 C from one point to another point in an electric field, what will be potential difference between these two points?
A)
105 V
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B)
500 V
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C)
20 V
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D)
200 V
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E)
None of these by
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In the circuit diagram given below calculate the total resistance of the circuit.
A)
\[4.8250\,\,\Omega \]
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B)
\[2.030\,\,\Omega \]
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C)
\[3.210\,\,\Omega \]
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D)
\[7.520\,\,\Omega \]
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E)
None of these
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An electric iron of resistance 25 ohm takes a current of 4 A. Calculate the heat developed in 2 minutes.
A)
40 kJ
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B)
48 kJ
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C)
32 kJ
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D)
42 kJ
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E)
None of these
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Which one of the following properties of magnetic field lines of a bar magnet is incorrect?
A)
Each magnetic field line forms a close curve
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B)
The strength of magnetic field is shown by the degree of closeness of the field lines
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C)
No two magnetic field lines can intersect each other
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D)
The magnetic field lines emerge from center of the magnet and merge at South Pole
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E)
None of these
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What will happen to the strength of magnetic field produced by a current carrying solenoid if number of turns in the coil is increased?
A)
Strength of magnetic field will also increase
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B)
Strength of magnetic field will decrease
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C)
Strength of magnetic field will remain unaffected
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D)
All of these
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E)
None of these
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A current carrying wire is placed in a magnetic field. If direction of the current in the wire is from north to south and direction of magnetic field is from west to east then in which direction force will be exerted on the wire?
A)
Toward north
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B)
Toward south
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C)
In upward direction
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D)
In downward direction
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E)
None of these
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What is the approximate value of solar constant?
A)
\[1.4\,\,kW/{{m}^{2}}\]
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B)
\[1.7\,\,kW/{{m}^{2}}\]
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C)
\[2.4\,\,kW/{{m}^{2}}\]
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D)
\[3.4\,\,kW/{{m}^{2}}\]
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E)
None of these
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A solar cell is a device which directly converts:
A)
Solar energy into kinetic energy
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B)
Solar energy into magnetic energy
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C)
Solar energy into electric energy
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D)
Electric energy into solar energy
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E)
None of these
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What is the function of moderator in a nuclear reactor?
A)
It absorbs the extra neutrons released during the fission reaction to bring about controlled chain reaction
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B)
It slows down the speed of fast moving neutrons released during fission reaction to carry out further fission reaction
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C)
It transfers heat produced in the nuclear reactor to the water in heat exchanger
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D)
It is used to run the steam turbine
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E)
None of these
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Which one of the following chemical equations is not balanced?
A)
\[3CaC{{O}_{3}}+2{{H}_{3}}P{{O}_{4}}\to C{{a}_{3}}{{(P{{O}_{4}})}_{2}}+3{{H}_{2}}O+3C{{O}_{2}}\]
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B)
\[2{{C}_{2}}{{H}_{6}}+7{{O}_{2}}\to 6{{H}_{2}}O+2C{{O}_{2}}\]
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C)
\[2Fe{{(OH)}_{3}}+3{{H}_{2}}S{{O}_{4}}\to F{{e}_{2}}{{(S{{O}_{4}})}_{3}}+6{{H}_{2}}O\]
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D)
\[2Fe+3{{H}_{2}}O\to F{{e}_{2}}{{O}_{3}}+3{{H}_{2}}\]
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E)
None of these
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In which one of the following types of chemical reactions a compound breaks down to give two or more simpler substances?
A)
Combination reaction
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B)
Decomposition reaction
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C)
Displacement reaction
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D)
Double-displacement reaction
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E)
None of these
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Which one of the following is the oxidizing agent in the given chemical reaction? \[{{H}_{2}}S+C{{l}_{2}}\to 2HCl+S\]
A)
\[{{H}_{2}}S\]
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B)
\[C{{l}_{2}}\]
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C)
\[2HCl\]
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D)
\[S\]
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E)
None of these
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Which one of the following gases is formed when an acid reacts with a metal placed above hydrogen in the reactivity series?
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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If pH value of four solutions A, B, C and D is 1, 3, 5 and 14 respectively, which solution has the highest hydrogen ion concentration?
A)
Solution A
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B)
Solution B
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C)
Solution C
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D)
Solution D
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E)
None of these
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What happens when a metal reacts with a non-metal?
A)
Metal loose electron and non-metal gain electron
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B)
Non-metal loose electron and metal gain electron
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C)
Both metal and non-metal gain electron
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D)
Both metal and non-metal loose electron
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E)
None of these
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Which one of the following compounds contains ionic bond?
A)
\[CaO\]
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B)
\[{{O}_{2}}\]
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C)
\[{{H}_{2}}O\]
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D)
\[N{{H}_{3}}\]
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E)
None of these
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Which one of the following metal can be extracted by the reduction of its oxides by heat alone?
A)
Sodium
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B)
Potassium
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C)
Calcium
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D)
Copper
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E)
None of these
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Name the hydrocarbon whose structural formula has been given below. \[H-\underset{\underset{H}{\mathop{|}}\,}{\mathop{\overset{H}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,-\underset{H}{\mathop{\underset{|}{\mathop{\overset{H}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-\underset{H}{\mathop{\underset{|}{\mathop{\overset{H}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-\underset{H}{\mathop{\underset{|}{\mathop{\overset{H}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C\equiv C-H\]
A)
Methyl-acetylene
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B)
1-hexyne
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C)
2-methylbutane
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D)
2, 2-dimethylhexyne
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E)
None of these
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How many isomers of the compound pentane \[({{C}_{5}}{{H}_{12}})\]are possible?
A)
One
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B)
Two
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C)
Three
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D)
Four
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E)
None of these
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How many elements does the fourth period contain in the modern periodic table?
A)
2
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B)
8
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C)
18
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D)
32
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E)
None of these
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On moving from left to right in a period of the modern periodic table, the size of the atoms:
A)
Increase
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B)
Decreases
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C)
Remain same
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D)
First increases then decreases
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E)
None of these
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What is the general molecular formula of aldehydes?
A)
\[{{C}_{n}}{{H}_{2n+1}}O\]
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B)
\[{{C}_{n}}{{H}_{n}}O\]
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C)
\[{{C}_{n}}{{H}_{2n+2}}O\]
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D)
\[{{C}_{n}}{{H}_{2n}}O\]
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E)
None of these
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Which one of following enzymes is present in saliva?
A)
Ptyalin
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B)
Maltose
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C)
Pepsin
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D)
Renin
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E)
None of these
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The epiglottis guards the opening of:
A)
Oesophagus
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B)
Trachea
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C)
Larynx
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D)
Bronchioles
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E)
None of these
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Which one of the following is the functional unit of kidney?
A)
Neurons
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B)
Nephron
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C)
Glomerulus
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D)
Cortex
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E)
None of these
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Which one of the following is the largest part of the forebrain?
A)
Cerebrum
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B)
Diencephalon
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C)
Optic lobes
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D)
Pons
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E)
None of these
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Which one of me following glands is present in Brain?
A)
Thyroid gland
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B)
Thymus gland
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C)
Adrenal gland
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D)
Hypothalamus gland
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E)
None of these
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The fusion of a male and a female gamete results in the formation of:
A)
Egg
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B)
Sperm
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C)
Spore
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D)
Zygote
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E)
None of these
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Gonorrhea is a sexually transmitted disease which is caused by:
A)
Virus
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B)
Bacteria
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C)
Fungi
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D)
Worms
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E)
None of these
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The hereditary units are stretches of DNA called:
A)
Chromosomes
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B)
Genes
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C)
Traits
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D)
Characters
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E)
None of these
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A cross between two individuals results in a ratio of 9 : 3 : 3 : 1 for four possible phenotypes of progeny. This is an example of:
A)
Dihybrid cross
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B)
Monohybrid cross
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C)
Test cross
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D)
All of these
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E)
None of these
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Out of the following, which is the linear arrangement of organisms?
A)
Trophic level
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B)
Ecosystem
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C)
Food chain
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D)
Food web
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E)
None of these
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Which one of the following forms the first trophic level in a food chain?
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 energy rich compound produced during respiration is:
A)
ATP
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B)
ADP
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C)
RBC
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D)
Pyruvate
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E)
None of these
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Which one of the following animals has single circulatory system?
A)
Dog
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B)
Bird
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C)
Crocodile
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D)
Fish
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E)
None of these
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