Class- x Sub- Science
Contact Number-
8638679850
1..The process by which autotrophic
organism take in substances and convert into stored form of energy is called
a)
Glycolysis
b) Photosynthesis
c) Excretion
d)
Transportation
2.. 6CO2 +12H2O----------------
________ +6O2+6H2O. Complete the equation
a)
C6H10O6
b) C6H12O6
c)
C6H12O5
d)
C6H10O5
3. Light is absorbed by
plants through
a) Mitochondria
b) Chlorophyll
c)
Phloem
d)
Chloroplast
4.The conversion of Water
to Hydrogen and Oxygen is an example of\
a)
Heat
energy to Chemical energy
b) Light energy to Chemical energy
c) Solar energy to Chemical energy
d) Light energy to Heat energy
5.. The vein which brings clean blood from the lungs into the
heart is known as:
a) Pulmonary vein
b) Hepatic vein
c) Superior vena cava
d) Pulmonary artery
6..The false legs of
Amoeba are called
a)
Pseudopodia
b)
Amoepodia
c)
Aloepodia
d) Falpodia
7.Which of the following
are called “Biological Catalyst”
a)
Saliva
b) Enzymes
c) Sugar
d)
Water
8.The saliva contains
which of the following enzymes that breaks down starch into simple sugar
a) Salivary amiolase
b) Salivary amylase
c) Salivary amilase
d)
Salivary
amilyse
9.The conversion of Glucose
into Pyruvate in the breakdown process of Glucose, takes place in which of the
following
a) Chloroplast
b) Cytoplasm
c) Mitochondria
d)
Muscle
cells
10. what is the full-form
of ATP?
a) Adenosine Diphosphate
b) Adenosine Triphosphate
c) Adenosine Trichloride
d)
Adenoside
Dichloride
11.. The process of diffusion of solvent particles from the
region of less solute concentration to a region of high solute concentration
through semi-permeable membrane is known as
a) Diffusion
b) Osmosis
c) Translocation
d) Transpiration
12. The wall dividing the
right ventricle and left ventricle of the heart is called
a) Vena Cava
b) Atrium
c) Septum
d)
Ventricle
13. Deoxygenated blood
comes back from the body and first enters which of the following
a) Aorta
b) Left atrium
c) Right Atrium
d) Pulmonary veins
14..
The excretory unit of the human excretory
system is known as:
a) Nephridia
b) Neuron
c) Nephron
d) kidneys
15. The longest fibre on
the cell body of a neuron is called
a) Sheath
b) Cytoplasm
c) Axon
d)
Dendrites
16. Which nerves transmit
impulses from the central nervous system towards muscle cells?
a) Sensory nerves
b) Motor nerves
c) Relay nerves
d)
Cranial
nerves
17`. A microscopic gap
between adjacent neurons over which nerves impulses pass is called
a) Neurotransmitter
b) Dendrites
c) Axon
d)
Synapse
18.. Fall of mature leaves
and fruits from plant is triggered by which of the following substances?
a) Auxin
b) Cytokinin
c) Gibberellin
d)
ABA
19.. Which of the
following is not a ductless gland?
a) Adrenal
b) Liver
c) Thyroid
d)
Pituitary
20. Which endocrine gland
is called “Master Gland”?
a) Pancreas
b) Adrenal
c) Hypothalamus
d)
Pituitary
21. Abscisic acid controls
a)
Cell
elongation
b)
Apical
dominance
c)
Cell
division
d)
Leaf
fall and dormancy
22. The hormone used to
keep flower fresh
a)
Cytokinin
b) Gibberellin
c) ABA
d)
Auxin
23.. Reflex action is
mediated through
a)
Brain
b) Effectors
c) Spinal cords
d)
Receptors
24. How many pairs of
Cranial nerves are present in man?
a)
12
b) 21
c) 31
d) 41
25.. Which among the following is necessary to carry out
the blood coagulation in a cut or wound?
a) White Blood Cells
b) Blood plasma
c) Platelets
d) Red blood cells
26.. A person cannot see distinctly objects kept beyond 2 m.
This defect can be corrected by using a lens of power
(a) +0.5 D
(b) ─0.5 D
(c) +0.2 D
(d) ─0.2 D
27.. Which of the following phenomena of light are involved
in the formation of a rainbow?
(a) Reflection, refraction and dispersion
(b) Refraction, dispersion and total internal reflection
(c) Refraction, dispersion and internal reflection
(d) Dispersion, scattering and total internal reflection
28.. When
light rays enter the eye, most of the refraction occurs at the
(a) crystalline lens
(b) outer surface of the cornea
(c) iris
(d) pupil
29. Which of the following statements is correct?
(a) A person with myopia can see distant objects clearly
(b) A person with hypermetropia can see nearby objects clearly
(c) A person with myopia can see nearby objects clearly
(d) A person with hypermetropia cannot see distant objects clearly
30. The black
opening between the aqueous humour and the lens is called
(a) retina
(b) iris
(c) cornea
(d) pupil
(a) retina
(b) iris
(c) cornea
(d) pupil
31. Near and far points of a young person
normal eye respectively are
(a) 0 and infinity
(b) 0 and 25 cm
(c) 25 cm and infinity
(d) 25 cm and 150 cm
(a) 0 and infinity
(b) 0 and 25 cm
(c) 25 cm and infinity
(d) 25 cm and 150 cm
32. Myopia and hypermetropia can be corrected by
(a) Concave and plano-convex lens
(b) Concave and convex lens
(c) Convex and concave lens
(d) Plano-concave lens for both defects.
(a) Concave and plano-convex lens
(b) Concave and convex lens
(c) Convex and concave lens
(d) Plano-concave lens for both defects.
33. When white light enters a prism, it gets
split into its constituent colours. This is due to
(a) different refractive index for different wavelength of each colour
(b) each colours has same velocity in the prism.
(c) prism material have high density.
(d) Scattering of light
(a) different refractive index for different wavelength of each colour
(b) each colours has same velocity in the prism.
(c) prism material have high density.
(d) Scattering of light
34. The muscular diaphragm that controls the
size of the pupil is
(a)
cornea
(b) ciliary muscles
(c) iris
(d) retina
(b) ciliary muscles
(c) iris
(d) retina
35.. When a beam of
white light falls on a glass prism, the colour of light which will deviate
least is:
(a) Violet b)
Red c) Green
d) Blue
36. We should reduce
the use of the plastic bags, bottles etc. because:
(a) They are not durable
(b) They are non-biodegradable
(c) They are made of toxic materials
(d) They react
with the atmospheric gases
37.. Among the following choose the correct option which contains
only biodegradable items?
i. Wood, paper, PVC ii.
Paper, seeds, detergent
iii. Paper, animal excreta, wood iv.
Wool, leaves, paper
(a) (i), (ii) and (iii)
(b) (i) and (iii)
(c) (ii), (iii) and (iv)
(d) (iii) and
(iv)
38.. In a food chain the second trophic level is occupied
by:
(a) Carnivores
(b) Autotrophs
(c) Herbivores
(d) Producers
39.. The process of accumulation of harmful chemical substances
like pesticides, in the body of living organisms at each trophic level of a
food chain is known as:
(a) Biological magnification (b)
Biological accumulation
(c) Chemical magnification (d) Chemical accumulation
40.. Which of the following radiations is responsible for the
conversion of atmospheric oxygen to ozone?
(a) Gamma radiations (b) Cosmic radiations (c) Infrared radiations (d) Ultraviolet radiations
41.. The substance which is chiefly responsible for the depletion
of ozone layer is:
(a) CFCs (b)
CH4 (c)
DDT (d) O3
42.. Global warming is a phenomenon related to:
(a) Evaporation (b)
Ecological balance (c)
Greenhouse effect (d)
Desertification
43.. In a food chain, the third trophic level is always occupied
by
(a) carnivores (b)
herbivores (c) decomposers (d) producers
44.. The functional
unit of environment is
a.
Ecosystem
b.
Nitrogen
c.
Carbon
d.
Oxygen
45.. The formula of
Ozone is _______
a)
O3 b)
O2 c) O4 d) O6
46.. A good fuel is one that
possesses:
(a) High calorific value and low ignition temperature
(b) Low calorific value and low ignition temperature
(c) High calorific value and moderate ignition temperature
(d) Low calorific value and moderate ignition temperature
47.. Coke is more valuable when used:
(a) As a fuel for industrial boilers (b) As an oxidizing agent
(c) As a reducing agent (d) As a fuel
in domestic ovens
48.. In order to make efficient solar cooker, the cover of cooker
box should be made of:
(a) Transparent plastic sheet (b)
Shining aluminium sheet
(c) Butter paper
sheet (d)
Transparent glass
49.. How many joules are there in 1eV?
(a) 1.6 × 10-19 J (b)
9.1 × 10-31 J (c)
6.0 ×1023 J (d)
1.6 × 10-13 J
50.. The disposal of wastes produced in a nuclear power plant is a
big problem because it is:
(a) Highly radioactive (b)
Highly inflammable (c) Extremely
foul smelling (d) Too heavy
51.. The process by which energy is produced in the sun is
(a) Nuclear fission (b)
Nuclear fusion (c) Both
nuclear fusion and fission
(d) Combustion of hydrogen
52.. Acid rain happens because
(a) sun leads to heating of upper layer of atmosphere
(b) burning of fossil fuels release oxides of carbon, nitrogen and
sulphur in the atmosphere
(c) electrical charges are produced due to friction amongst clouds
(d) the earth atmosphere contains acids
53.. In a hydro power plant
(a) potential energy possessed by stored water is converted into
electricity
(b) kinetic energy possessed by stored water is converted into
potential energy
(c) electricity is extracted from water
(d) water is converted into steam to produce electricity
54.. Which
one of the following forms of energy leads to least environmental pollution in
the process of its harnessing and utilisation?
(a) Nuclear energy (b)
Thermal energy (c) Solar energy (d) Geothermal energy
55.. The main constituent of biogas is
(a) methane (b) carbon dioxide (c) hydrogen (d) hydrogen sulphide
56.. The enzymes pepsin and trypsin are secreted
respectively by
a) Stomach and pancreas
b) Salivary gland and stomach
c) Liver and pancreas
d) Liver and salivary gland
57.. Which of the following help in protecting the inner lining of
the stomach from the harmful effect of hydrochloric acid?
a) Mucus b) Pepsin c) Trypsin d) Bile
58.. The movement of a plant part in response to the force of
attraction exerted by the earth is called:
(a) Hydrotropism (b)
Geotropism (c) Chemotropism (d) Phototropism
59.. Respiratory
pigment in human body is
a.
Chlorophyll
b.
Water
c.
Blood
d.
Haemoglobin
60.. Blood consist of
what fluid medium?
a)
Lymph
b)
Platelets
c)
Plasma
d)
All of these
61.
the atomic number of an element is 19. The number of elements in it’s X+ Ion
will be
a) 18 b) 19 c)
20 d) 21
62.
the metal which can be extracted for PYROLUSITE Ore is
a) Mercury b) Manganese c)
aluminiun d) Magnesiun
63.
ORE of mercury metal ?
a) Rock- salt b) Cinnabar c) Calamine d) Raematite
64.
The sulphide Ore is converted into metal oxide by the process of
a) Carbonation b) Roasting c) Calcination d)
Anodising
65.
Brass is an alloy of
a) CU and SN b) CU and PB c) PB and SN d) ZN and CU
66.
metal which is always present in an amalgam is
a) Iron b) Aluminium c) Mercury d)
Magnesium
67.
which of the following is obtain from Haematite Ore
a) Cu b) Na c)
Zn d) Fe
68.
During galvanisation iron is given a coating of one of the following metals
a) Chromium b) Tin c)
Zinc d) copper
69.
A covalent molecule having a double bond
a) Hydrogen b) Oxygen c)
Water d) Ammonia
70.
Which of the following compound is not ionic
a) Lithium chloride b) Ammonium chloride
c) calcium chloride d) carbon tetra chloride
71.
the molecular formula of a homologe of butane is
a) C4H8 b) c3H6 c) c4H6 d) c3H8
72.
one of the following Burns without producing a flame
a) Wood b) Charcoal c)
LPG d) Candle
73.
the fuel which burns with a blue flame
a) Coal b) LPG c)
candle wax d) kerosene
74.
the functional group of propanal is
a) –OH b) –COOH c)
–CO- d) –CHO
75.
which one of the molecular formula represents a ketone
a) C5H12O b) C6H12O2 c) C6H14O d) C6H12O
76.
the molecular formula for the third member of the homologus series of
ketones is
a) C4H12O b) C3H6O c) C5H10O d) C6H12O
77.
Which of the following burns producing a yellow luminous flame?
a) Natural gas b) Coke c) Wax d)Charcoal
78.
Which of the following can not exhibit isomerism
a) C4H10 b) C5H12 c) C3H8 d) C6H4
79.
The no of isomers formed by the hydrocarbon – [C5H12]
a) 2 b)
5 c) 3 d) 4
80.
The pencil leads are made up of
a) lithium b) Charcoal c)
lead d) graphite
81.
The hydrocarbon 2-methylbutane is an isomer of
a) n-pentane b) n-butane c)
propane d) iso- butane
82.
The number of covalent bonds in pentane is
a) 5 b)
12 c) 17 d) 16
83.
one of the following is not an allotrope of carbon. This is
a) diamond b) Graphite c)
Cumene d) buckministerfullerene
84.
The hydrocarbon which has alternate single and double bonds arranged in the
form of a ring
a) Cyclobutane b) Benzene c) butane d)
Hexene
85.
The angle of reflection is equal to the angle of incidence
a) always b) Sometimes c)
Under special conditions d) never
86.
The image formed by a plane mirror is
a) Virtual b) real c)
diminished d) upside- down
87.
the angle of incidence for a ray of light passing through the centre of
curvature of a concave mirror is
a) 450 b) 90 0 c) 00 d) 1800
88. Linear
magnification (m) produced by a rear view mirror fitted in vehicles
a) is equal to one b) is less than one c) is more than one
d)
can be more or less than one depending on the position of object
89. magnification
produced by a convex mirror is always
a)
More than 1 b) Less
than 1
c) equal to 1 d) more or less than 1
90. The mirror used by
a dentist to examine the teeth of a person is
a) Convex b) Concave
c)
Plane d) any one of
the above
91. magnification
produced by a concave lens is always
a) more than 1 b) equal to 1
c) less than 1 d) more than 1 or less than 1
92. A convex lens
produces a magnification of +5. The object is placed
a) at focus b) between f and 2f c)
at less than f d) beyond 2f
93. The power of a
lens is +2.0 D. it’s focal length should be
a)100 cm b) 50 cm c)
25 cm d) 40 cm
94. A converging lens
has a focal length of 50 cm. the power of this is
a) +0.2 D b) -2.o D c)
+2.o D d) – 0.2 D
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