PM Yashasvi 11th Class Science Model Paper 1 | Yashasvi ImportantQuestions

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PM Yashasvi 11th Class Science Model Paper 1 | Yashasvi Important Questions

 

1. Which of the following are energy foods?
(a) Carbohydrates and fats
(b) Proteins and mineral salts
(c) Vitamins and minerals
(d) Water and roughage
Answer: a

2. In which mode of nutrition an organism de-rives its food from the body of another living organism without killing it?
(a) Saprotrophic nutrition
(b) Parasitic nutrition
(c) Holozoic nutrition
(d) Autotrophic nutrition
Answer: b

3. The mode of nutrition found in fungi is:
(a) Parasitic nutrition
(b) Holozoic nutrition
(c) Autotrophic nutrition
(d) Saprotrophic nutrition
Answer: d

4. Roots of the plants absorb water from the soil through the process of:
(a) diffusion
(b) transpiration
(c) osmosis
(d) None of these
Answer: c

5. The site of photosynthesis in the cells of a leaf is
(a) chloroplast
(b) mitochondria
(c) cytoplasm
(d) protoplasm
Answer: a

6. In amoeba, food is digested in the:
(a) food vacuole
(b) mitochondria
(c) pseudopodia
(d) chloroplast
Answer: a

7. Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in the saliva?
(a) Starch breaking down into sugars.
(b) Proteins breaking down into amino acids.
(c) Absorption of vitamins.
(d) Fats breaking down into fatty acids and glycerol.
Answer: a

8. Which region of the alimentary canal absorbs the digested food?
(a) Stomach
(b) Small intestine
(c) Large intestine
(d) Liver
Answer: b

9. The contraction and expansion movement of the walls of the food pipe is called:
(a) translocation
(b) transpiration
(c) peristaltic movement
(d) digestion
Answer: c

10. When a few drops of iodine solution are added to rice water, the solution turns blue- black in colour. This indicates that rice water contains:
(a) fats
(b) complex proteins
(c) starch
(d) simple proteins
Answer: c

11. The exit of unabsorbed food material is regu-lated by
(a) liver
(b) anus
(c) small intestine
(d) anal sphincter
Answer: d

12. What are the products obtained by anaerobic respiration in plants?
(a) Lactic acid + Energy
(b) Carbon dioxide + Water + Energy
(c) Ethanol + Carbon dioxide + Energy
(d) Pyruvate
Answer: c

13. The breakdown of pyruvate to give carbon di-oxide, water and energy takes place in
(a) cytoplasm
(b) mitochondria
(c) chloroplast
(d) nucleus
Answer: b

14. Glycolysis process occurs in which part of the cell?
(a) Cytoplasm
(b) Nucleus
(c) Mitochondria
(d) Chloroplast
Answer: a

15. Name the substances whose build up in the muscles during vigorous physical exercise may cause cramps?
(a) Ethanol + Carbon dioxide + Energy
(b) Lactic acid + Energy
(c) Carbon dioxide + Water + Energy
(d) Pyruvate
Answer: b

16. Name the pores in a leaf through which respi-ratory exchange of gases takes place.
(a) Lenticels
(b) Vacuoles
(c) Xylem
(d) Stomata
Answer: d

17. The respiratory pigment in human beings is:
(a) carotene
(b) chlorophyll
(c) haemoglobin
(d) mitochondria
Answer: c

18. Which plant tissue transports water and min-erals from the roots to the leaf?
(a) Xylem
(b) Phloem
(c) Parenchyma
(d) Collenchyma
Answer: a

19. The movement of food in phloem is called:
(a) transpiration
(b) translocation
(c) respiration
(d) evaporation
Answer: b

20. A blood vessel which pumps the blood from the heart to the entire body:
(a) artery
(b) capillary
(c) Vein
(d) Haemoglobin
Answer: a

21. Name a circulatory fluid in the human body other than blood.
(a) Platelets
(b) RBC
(c) Lymph
(d) Plasma
Answer: c

22. Single circulation, i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by which of the following:
(a) hyla, rana, draco
(b) whale, dolphin, turtle
(c) labeo, chameleon, salamander
(d) hippocampus, exocoetus, anabas
Answer: d

23. Name the tube which connects the kidneys to the urinary bladder.
(a) Urethra
(b) Nephron
(c) Tubule
(d) Ureter
Answer: d

24. Which part of nephron allows the selective reabsorption of useful substances like glucose, amino acids, salts and water into the blood capillaries?
(a) Tubule
(b) Glomerulus
(c) Bowman’s capsule
(d) Ureter
Answer: a

25. Where is the dirty blood in our body filtered?
(a) Heart
(b) Lungs
(c) Ureter
(d) Kidneys
Answer: d

26. The procedure used for cleaning the blood of a person by separating urea from it is called:
(a) osmosis
(b) filtration
(c) dialysis
(d) double circulation
Answer: c

27. Which is the correct sequence of body parts in the human alimentary canal?
(a) Mouth → stomach → small intestine → large intestine → oesophagus
(b) Mouth → oesophagus → stomach → small intestine → large intestine
(c) Mouth → stomach → oesophagus → smallintestine → large intestine
(d) Mouth → oesophagus → stomach → large intestine → small intestine
Answer: b

28. Identify the correct path of urine in the human body.
(a) Kidney → urinary bladder → urethra → ureter
(b) Urinary bladder → ureter → kidney → urethra
(c) Kidney → ureter → urethra → urinary bladder
(d) Kidney → ureter → urinary bladder → urethra
Answer: d

29. Autotrophic organisms include
(a) bacteria and virus
(b) bacteria and fungi
(c) green plants and some bacteria
(d) green plants and all bacteria
Answer: c

30. A gland not associated with the alimentary canal is
(a) liver
(b) salivary glands
(c) pancreas
(d) adrenal
Answer: d

31. Which of the following are chiefly digested in the stomach?
(a) Carbohydrates
(b) Proteins
(c) Lipids
(d) Fats
Answer: b

32. The ions O2-, F–, Na+, and Mg2+ are referred to as __________
a) Isoelectronic species
b) Isoneutral species
c) Isotopes
d) Isobars
Answer: a

33. Large intestine in man mainly carries out
(a) absorption
(b) assimilation
(c) digestion of fats
(d) digestion of carbohydrates
Answer: a

34. The part of the digestive system where no digestion takes place is
(a) ileum
(b) stomach
(c) mouth
(d) oesophagus
Answer: d

35. The fermentation of glucose by yeast normally yields
(a) alcohol, CO2 and 36 ATP
(b) CO2, H20 and 36 ATP
(c) alcohol, CO2 and 2ATP
(d) lactic acid, CO7 and 2 ATP
Answer: d

36. A large quantity of one of the following is removed from our body by lungs:
(a) CO2 and H20
(b) CO2 only
(c) FLO only
(d) ammonia
Answer: a

37. In respiration, air passes through
(a) Pharynx → nasal cavity → larynx → trachea bronchi → bronchioles
(b) Nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles
(c) Larynx → nasal cavity’ → pharynx → trachea
(d) Larynx → pharynx trachea → lungs
Answer: b

38. A biochemical compound that readily combines with oxygen and distributes it throughout the human body is
(a) water
(b) urea
(c) haemoglobin
(d) acetylcholine
Answer: c

39. The process in which loss of water takes place in the form of water vapour through stomata is called
(a) transportation
(b) transpiration
(c) guttation
(d) translocation
Answer: b

40. In a closed circulatory system, blood is completely enclosed within
(a) vessels
(b) heart
(c) skeleton
(d) sinuses
Answer: b

41. Normal blood pressure (systolic/diastolic) is
(a) 120/80 mm of Hg
(b) 160/80 mm of Hg
(c) 120/60 mm of Hg
(d) 180/80 mm of Hg
Answer: a

42. Blood pressure is measured by an instrument called
(a) barometer
(b) sphygmomanometer
(c) photometer
(d) manometer
Answer: b

43. Which of the following statements is not correct?
(a) Deoxygenated blood is poured into right atrium of heart.
(b) The excretory units of flatworms are flame cells.
(c) Human kidney has about 1 million nephridia
(d) Tracheids and vessels are non-living conducting tissues.
Answer: c

44. Which part of alimentary canal receives bile from the liver? [NCERT Exemplar Problems]
(a) Stomach
(b) Small intestine
(c) Large intestine
(d) Oesophagus
Answer: b

45. When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of [NCERT Exemplar Problems]
(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) water vapour
Answer: b

46. The filtration units of kidneys are called [NCERT Exemplar Problems]
(a) ureter
(b) urethra
(c) neurons
(d) nephrons
Answer: d

47. Oxygen liberated during photosynthesis comes from [NCERT Exemplar Problems]
(a) water
(b) chlorophyll
(c) carbon dioxide
(d) glucose
Answer: a

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48. The opening and closing of the stomatal pore depends upon [NCERT Exemplar Problems]
(a) oxygen
(b) temperature
(c) water in guard cells
(d) concentration of CO2 in stomata
Answer: c

49. What may a litmus paper be used to test?
a) Acidic nature only
b) Basic nature only
c) Both acidic nature and basic nature
d) Nothing
Answer: c

50. What is the first element in the periodic table’s fourth transition series?
a) Scandium
b) Yttrium
c) Actinium
d) Lanthanum
Answer: c

51. The unit of measurement for electric current is:
a) Volt
b) Watt
c) Ampere
d) Ohm
Answer: c) Ampere

52. Which process involves the conversion of a solid directly into a gas without passing through the liquid state?
a) Melting
b) Evaporation
c) Sublimation
d) Condensation
Answer: c) Sublimation

53. Which part of the eye is responsible for focusing light onto the retina?
a) Iris
b) Pupil
c) Cornea
d) Lens
Answer: d) Lens

54. The process of breaking down complex substances into simpler substances with the release of energy is known as:
a) Respiration
b) Fermentation
c) Photosynthesis
d) Combustion
Answer: a) Respiration

55. What is the main component of natural gas?
a) Methane
b) Ethane
c) Propane
d) Butane
Answer: a) Methane

56. What is the SI unit of force?
a) Newton
b) Watt
c) Joule
d) Pascal
Answer: a) Newton

57. Which gas is responsible for the depletion of the ozone layer in the atmosphere?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Chlorofluorocarbons (CFCs)
Answer: d) Chlorofluorocarbons (CFCs)

58. The process of digestion begins in which organ of the human body?
a) Stomach
b) Small intestine
c) Mouth
d) Liver
Answer: c) Mouth

59. Which type of mirror is used in a rear-view mirror of a vehicle?
a) Convex mirror
b) Concave mirror
c) Plane mirror
d) Cylindrical mirror
Answer: a) Convex mirror

60. What is the chemical formula of common salt (table salt)?
a) NaCl
b) H2O
c) CO2
d) C6H12O6
Answer: a) NaCl

61. What is the unit of electric power?
a) Volt
b) Watt
c) Ohm
d) Ampere
Answer: b) Watt

62. Which of the following is a non-metal that remains liquid at room temperature?
a) Mercury
b) Gold
c) Aluminum
d) Iron
Answer: a) Mercury

63. The instrument used for measuring the blood pressure of an individual is called:
a) Thermometer
b) Sphygmomanometer
c) Barometer
d) Manometer
Answer: b) Sphygmomanometer

64. Which of the following is NOT a primary color of light?
a) Red
b) Blue
c) Green
d) Yellow
Answer: d) Yellow

65. Which process involves the splitting of a heavy nucleus into two lighter nuclei with the release of a large amount of energy?
a) Fission
b) Fusion
c) Combustion
d) Condensation
Answer: a) Fission

66. The gas that gives a fizzy or effervescent feeling in soft drinks is:
a) Oxygen
b) Carbon dioxide
c) Helium
d) Nitrogen
Answer: b) Carbon dioxide

67. Which of the following diseases is caused by the deficiency of iron in the human body?
a) Anemia
b) Malaria
c) Tuberculosis
d) Typhoid
Answer: a) Anemia

68. The phenomenon of bending of light as it passes from one medium to another is called:
a) Reflection
b) Refraction
c) Diffusion
d) Dispersion
Answer: b) Refraction

69. Which of the following is a greenhouse gas released during the burning of fossil fuels and deforestation?
a) Nitrous oxide
b) Methane
c) Carbon monoxide
d) Sulphur dioxide
Answer: b) Methane

70. The process of conversion of a solid directly into a gas without passing through the liquid state is known as:
a) Evaporation
b) Melting
c) Sublimation
d) Condensation
Answer: c) Sublimation

71. The process of conversion of light energy into chemical energy in plants occurs during:
a) Photosynthesis
b) Respiration
c) Transpiration
d) Fermentation
Answer: a) Photosynthesis

72. The device used to measure the potential difference between two points in an electric circuit is called a:
a) Voltmeter b) Ammeter
c) Galvanometer d) Rheostat
Answer: a) Voltmeter

73. Which of the following is a viral disease that affects the respiratory system and can cause severe outbreaks?
a) Malaria
b) Tuberculosis
c) Influenza (Flu)
d) Cholera
Answer: c) Influenza (Flu)

74. The process of conversion of light energy into electrical energy in solar cells is called:
a) Reflection
b) Refraction
c) Photosynthesis
d) Photovoltaic effect
Answer: d) Photovoltaic effect

75. Which gas is released during the process of respiration in living organisms?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: c) Carbon dioxide

76. The change in the direction of a wave passing from one medium to another is termed as
(a) Interference
(b) Mirage
(c) Diffraction
(d) Refraction
Answer: (d) Refraction

77. What would be the angle of incidence for a light ray having zero reflection angle?
(a) 180 degree
(b) 90 degree
(c) 0 degree
(d) 45 degree
Answer: (c) 0 degree

78. Light can be focused on our retina through which of the following phenomena?
(a) Interference
(b) Refraction
(c) Diffraction
(d) Mirage
Answer: (b) Refraction

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79. Speed of light in a vacuum is represented as
(a) a
(b) v
(c) c
(d) l
Answer: (c) c

80. A full length of the image of a distant tall building can be seen using
(a) a convex mirror
(b) a plane mirror
(c) a concave mirror
(d) none of the option
Answer: (a) a convex mirror

81. The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant. It is
given by
(a) Faraday’s law
(b) Snell’s law
(c) Newton’s law
(d) Murphy’s law
Answer: (b) Snell’s law

82. Twinkling of stars is due to which optical phenomenon?
(a) Reflection
(b) Interference
(c) Refraction
(d) Divergence
Answer: (c) Refraction

83. The laws of reflection are valid for
(a) a convex mirror
(b) a plane mirror
(c) a concave mirror
(d) all mirrors irrespective of their shape
Answer: (d) all mirrors irrespective of their shape

84. Light from the Sun falling on a convex lens will converge at
(a) Radius of curvature
(b) Optical centre
(c) Focus
(d) None of the option
Answer: (c) Focus

85. Concave lens produces
(a) only virtual image
(b) only erect image
(c) diminished image
(d) virtual, erect, and diminished image
Answer: (d) virtual, erect, and diminished image

86. Scattering of light can be seen in
(a) blue colour of sky
(b) reddening of the Sun at sunrise
(c) reddening of the Sun at sunset
(d) All of the above
Answer: (d) All of the above

87. The change in focal length of the human eye is caused due to
(a) Cornea
(b) Iris
(c) Ciliary muscles
(d) Pupil
Answer: (c) Ciliary muscles

88. The ability of the eye lens to adjust its focal length is called
(a) Indexing of eye
(b) Accommodation of eye
(c) Vision restoration
(d) Adaptivity of eye
Answer: (b) Accommodation of eye

89. How does the eye change in order to focus on near or distant objects?
(a) The lens moves in or out
(b) The pupil gets smaller
(c) The retina moves in or out
(d) The lens becomes thicker or thinner
Answer: (d) The lens becomes thicker or thinner

90. The crystalline lens of people at old age becomes milky and cloudy; this condition is known as
(a) Hypermetropia
(b) Myopia
(c) Cataract
(d) Presbyopia
Answer: (c) Cataract

91. Far-sightedness is also known as
(a) Hypermetropia
(b) Myopia
(c) Cataract
(d) Presbyopia
Answer: (a) Hypermetropia

92. A person having defective cone cells and unable to distinguish different colours is termed as
(a) Hypermetropia
(b) Myopia
(c) Colour-blindness
(d) Cataract
Answer: (c) Colour-blindness

93. At a particular minimum angle of deviation, the prism is under
(a) Minimum deviation position
(b) Maximum deviation position
(c) No deviation position
(d) None of the option
Answer: (a) Minimum deviation position

94. In the rearview mirror of the vehicle, what will be the magnification?
(a) 1
(b) greater than 1
(c) Lesser than 1
(d) No magnification seen
Answer: (c) Lesser than 1

95. In which of the following, light travels fast?
(a) Oil
(b) Water
(c) Air
(d) Paper
Answer: (c) Air

96. Which of the following elements belongs to the periodic table’s second transition series?
a) Ni
b) Au
c) La
d) Nb
Answer: d

97. What are the transition elements’ characteristics?
a) Metallic
b) Non-metallic
c) Metalloid
d) Varies from element to element
Answer: a

98. An element’s physical and chemical properties are a periodic function of its mass
a) Atomic mass
b) Element behaviour
c) No of electrons
d) Atomic number
Answer: d

99. Mendeleev’s periodic table’s horizontal rows were called __________
a) periods
b) groups
c) series
d) rows
Answer: c

100. The greatest number in the period correlates to the highest number in the period.
a) Azimuthal quantum number
b) Spin quantum number
c) Magnetic quantum number
d) Principal quantum number
Answer: d

101. Which plant hormone promotes dormancy in seeds and buds?
(a) Auxin
(b) Gibberellin
(c) Cytokinin
(d) Abscisic acid
Answer: d

102. Roots of plants are:
(a) positively geotropic
(b) negatively geotropic
(c) positively phototropic
(d) None of these
Answer: a

103. Response of plant roots towards water is called:
(a) Chemotropism
b) Phototropism
(c) Hydrotropism
(d) Geotropism
Answer: c

104. Movement of sunflower in accordance with the path of Sun is due to
(a) Chemotropism
(b) Geotropism
(c) Phototropism
(d) Hydrotropism
Answer: c

105. Which plant hormone promotes cell division?
(a) Auxin
(b) Gibberellin
(c) Cytokinin
(d) Abscisic acid
Answer: c

10106. The main function of abscisic acid in plants is
(a) to promote cell division.
(b) to inhibit growth.
(c) to promote growth of stem.
(d) to increase the length of cells.
Answer: b

107. Fall of mature leaves and fruits from plants is triggered by which of the following substance?
(a) Auxin
(b) Cytokinin
(c) Gibberellin
(d) Abscisic acid
Answer: d

108. Any change in the environment to which an organism responds is called
(a) stimulus
(b) coordination
(c) response
(d) hormone
Answer: a

109. A part of the body which responds to the in-structions sent from nervous system is called
(a) receptor
(b) effector
(c) nerves
(d) muscles
Answer: b

110. The longest fibre on the cell body of a neuron is called
(a) sheath
(b) cytoplasm
(c) axon
(d) dendrites
Answer: c

111. Which nerves transmit impulses from the cen¬tral nervous system towards muscle cells?
(a) Sensory nerves
(b) Motor nerves
(c) Relay nerves
(d) Cranial nerves
Answer: b

112. A microscopic gap between a pair of adjacent neurons over which nerve impulses pass is called
(a) neurotransmitter
(b) dendrites
(c) axon
(d) synapse
Answer: d

113. The attributes of corresponding elements are the periodic functions of the ________
a) Atomic Weights
b) Atomic Number
c) Chemical properties
d) No of protons
Answer: a

114. The highest coordinating centre in the human body is
(a) spinal cord
(b) heart
(c) brain
(d) kidney
Answer: c

115. Main function of cerebrum is
(a) thinking
(b) hearing
(c) memory
(d) balancing
Answer: a

116. Posture and balance of the body is controlled by
(a) Pons
(b) Medulla oblongata
(c) Cerebellum
(d) Cerebrum
Answer: c

117. Breathing is controlled by which part of the brain?
(a) Cerebrum
(b) Cerebellum
(c) Hypothalamus
(d) Medulla oblongata
Answer: d

118. Which part of nervous system controls the re¬flex activities of the body?
(a) Brain
(b) Spinal cord
(c) Cerebrum
(d) Cerebellum
Answer: b

119. Which of the following acts as both endocrine and exocrine gland?
(a) Pancreas
(b) Thyroid
(c) Adrenal
(d) Liver
Answer: a

120. Identify which of the following statements about thyroxin is incorrect?
(a) Thyroid gland requires iodine to synthesize thyroxin.
(b) Thyroxin is also called thyroid hormone.
(c) It regulates protein, carbohydrates and fat metabolism in the body.
(d) Iron is essential for the synthesis of thyroxin.
Answer: d

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121. Which gland secretes the growth hormone?
(a) Pituitary gland
(b) Thyroid
(c) Hypothalamus
(d) Adrenal
Answer: a

122. The secretion of which hormone leads to physical changes in the body when you are 10-12 years of age?
(a) Oestrogen from testes and testosterone from ovar.
(b) Estrogen from adrenal gland and testosterone from pituitary gland.
(c) Testosterone from testes and estrogen from ovary.
(d) Testosterone from thyroid gland and estrogen from pituitary gland.
Answer: c

123. A diabetic patient suffers from deficiency of which hormone?
(a) Thyroxine
(b) Testosterone
(c) Oestrogen
(d) Insulin
Answer: d

124. Which of the following endocrine glands does not exist in pairs?
(a) Testes
(b) Adrenal
(c) Pituitary
(d) Ovary
Answer: c

125. Which part of a nerve cell contains a nucleus?
(a) Axon
(b) Dendrite
(c) Cyton
(d) Nerve endings
Answer: c

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