The given chemical equation represents which type of chemical reaction? \[2Al+3C{{l}_{2}}\xrightarrow{{}}2AlC{{l}_{3}}\]
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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If the pH value of a solution is 3, the solution is:
A)
Basic
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B)
Acidic
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C)
Neutral
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D)
Both [a] and [b]
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E)
None of these
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Which of the following element is a metal?
A)
Nitrogen
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B)
Oxygen
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C)
Sodium
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D)
Sulphur
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E)
None of these
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Which of the following is a metalloid?
A)
Copper
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B)
Iron
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C)
Magnesium
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D)
Silicon
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E)
None of these
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Which of the following is the molecular formula of benzene?
A)
\[{{C}_{2}}{{H}_{6}}\]
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B)
\[{{C}_{6}}{{H}_{10}}\]
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C)
\[{{C}_{6}}{{H}_{12}}\]
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D)
\[{{C}_{6}}{{H}_{14}}\]
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E)
None of these
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The radius of curvature of a spherical mirror is 10 cm. What is its focal length?
A)
5 cm
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B)
10 cm
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C)
15 cm
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D)
20 cm
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E)
None of these
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Which of the following is true about an element if its atomic number is II?
A)
It is a metal
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B)
It is a non-metal
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C)
It is a noble gas
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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 cell organelles contain the light absorbing green pigment chlorophyll?
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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The movement of a plant part in response to light is called:
A)
Phototropism
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B)
Hydrotropism
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C)
Chemotropism
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D)
Geotropism
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E)
None of these
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What is the valency of magnesium?
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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Which one of the following maintains body's posture and balance?
A)
Cerebrum
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B)
Cerebral cortex
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C)
Cerebellum
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D)
Medulla oblongata
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E)
None of these
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Which one of the following organisms reproduces by budding?
A)
Amoeba
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B)
Yeast
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C)
Planaria
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D)
Spirogyra
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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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In which one of the following parts of a female reproductive system fertilization takes place?
A)
Uterus
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B)
Oviduct
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C)
Vagina
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D)
Ovary
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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 is the focal length of lens having power + 2D?
A)
20 cm
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B)
25 cm
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C)
40 cm
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D)
50 cm
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E)
None of these
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How much work is done in moving a charge of 5 coulombs from a point at 90 volts to the point at 120 volts?
A)
120 joules
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B)
140 joules
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C)
150 joules
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D)
160 joules
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E)
None of these
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Calculate the total resistance of the circuit given below.
A)
\[4.8\,\,\Omega \]
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B)
\[4.49\,\,\Omega \]
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C)
\[6.5\,\,\,\Omega \]
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D)
\[4.7\,\,\,\Omega \]
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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 a current carrying straight wire
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B)
Magnetic field lines due to a current carrying circular wire
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C)
Magnetic field lines due to a solenoid
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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 is a bio-degradable waste?
A)
Iron nails
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B)
Silver foils
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C)
Plastic bottles
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D)
Animal dung
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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
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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 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)
1 J
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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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In the following food chain which animal is present at second trophic level? Plants \[\to \] mouse \[\to \] snake \[\to \] hawk
A)
Plants
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B)
Mouse
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C)
Snake
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D)
Hawk
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E)
None of these
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Which one of the following letters represents the direction of magnetic field in the figure given below?
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 the odd one out.
A)
\[2{{H}_{2}}+{{O}_{2}}\to 2{{H}_{2}}O\]
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B)
\[C+{{O}_{2}}\to C{{O}_{2}}\]
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C)
\[CuS{{O}_{4}}+Fe\to FeS{{O}_{4}}+Cu\]
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D)
\[2Na+C{{l}_{2}}\to 2NaCl\]
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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)
Ethene
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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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Consider the following two statements: Statement A: Aluminium is more reactive than calcium Statement B: Calcium is more reactive than aluminium Which of the following is correct with respect to the above statements?
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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Identify the hydrocarbon whose structural formula has been given below.
A)
n-pentane
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B)
Isopentane
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C)
Neopentane
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D)
n-hexane
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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 can lose two electrons to attain the configuration of argon?
A)
Ca
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B)
C
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C)
Mg
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D)
Al
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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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By which one of the following organs an earthworm absorbs oxygen for respiration?
A)
Moist skin
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B)
Lungs
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C)
Gills
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D)
Spiracles
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E)
None of these
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Which of the following is the part of female reproductive system?
A)
Ovary
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B)
Uterus
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C)
Oviducts
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D)
All of these
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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 \[2\times {{10}^{-2}}ohm\].
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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A 2.0 cm high object is placed at a distance of 20 cm from a concave mirror. A real image is formed at 40 cm from the mirror. Calculate the focal length of the mirror.
A)
\[+\,\,12.5\text{ }cm\]
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B)
\[-\,\,13.3\,cm\]
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C)
\[-\,\,16.4\,cm\]
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D)
\[+\,\,14.3\,cm\]
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E)
None of these
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Which of the following is the common name of\[C{{H}_{3}}COOH\]?
A)
Ethanoic acid
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B)
Formic acid
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C)
Propanoic acid
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D)
Acetic acid
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E)
None of these
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Refractive index for light going from air to water is 1.33. Find the refractive index for 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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