Science (ਵਿਗਿਆਨ) - Questions 61 to 90
61. What is normal human blood pressure? (ਸਾਧਾਰਨ ਰਕਤ ਦਾਬ ਕਿੰਨਾਂ ਹੁੰਦਾ ਹੈ?)
(1) 160/60 (2) 120/60 (3) 120/80 (4) 160/80
Answer: (3) 120/80 mmHg is the standard healthy range.
62. Auxin hormone is responsible for increase in ______ of plant cells. (ਆਕਸਿਨ ਹਾਰਮੋਨ ਕੋਸ਼ਿਕਾਵਾਂ ਦੇ ______ ਵਿੱਚ ਵਾਧੇ ਲਈ ਸਹਾਈ ਹੁੰਦਾ ਹੈ?)
(1) Length (ਲੰਬਾਈ) (2) Thickness (3) Breadth (4) None
Answer: (1) Auxin promotes cell elongation in shoots.
63. What is the formula to calculate power of a lens? (ਲੈਨਜ ਦੀ ਸ਼ਕਤੀ ਗਿਆਤ ਕਰਨ ਲਈ ਫਾਰਮੂਲਾ ਕੀ ਹੈ?)
(1) P=4f (2) P=2f (3) P=1/2f (4) P=1/f
Answer: (4) Power is the reciprocal of focal length.
64. Far point of normal human eye is: (ਸਾਧਾਰਨ ਮਨੁੱਖੀ ਅੱਖ ਦਾ ਦੂਰ ਬਿੰਦੂ ਕਿੱਥੇ ਹੁੰਦਾ ਹੈ?)
(1) At 25 cm (2) At 25 mm (3) At 25 m (4) At infinity
Answer: (4) A healthy eye can see objects clearly up to infinity.
65. What is the colour of neutral wire in the domestic electric circuit? (ਉਦਾਸੀਨ ਤਾਰ ਦਾ ਰੰਗ ਕਿਹੜਾ ਹੁੰਦਾ ਹੈ?)
(1) Black (ਕਾਲਾ) (2) Green (3) Red (4) Yellow
Answer: (1) Black is traditionally used for neutral wires.
66. Which of the organism is herbivore? (ਹੇਠ ਲਿਖਿਆਂ ਵਿੱਚੋਂ ਕਿਹੜਾ ਜੀਵ ਇੱਕ ਜੜੀ ਬੂਟੀ (ਸ਼ਾਕਾਹਾਰੀ) ਹੈ?)
(1) Snake (2) Lice (3) Bug (4) Juscet (Grasshopper type)
Answer: (4) Insects like grasshoppers are herbivores.
67. What is the sign of Resistance? (ਪ੍ਰਤਿਰੋਧਕ ਦਾ ਸੰਕੇਤ ਕੀ ਹੈ?)
68. Current 0.6A runs for 10 minutes, what is electric charge? (0.6A ਧਾਰਾ 10 ਮਿੰਟਾਂ ਲਈ, ਚਾਰਜ ਕੀ ਹੈ?)
(1) 300 C (2) 350 C (3) 360 C (4) 400 C
Answer: (3) Q = I × t = 0.6 × 600s = 360C.
69. Due to which phenomenon the colour of sky is blue? (ਆਕਾਸ਼ ਦਾ ਰੰਗ ਨੀਲਾ ਕਿਸ ਕਾਰਨ ਹੁੰਦਾ ਹੈ?)
(1) Dispersion (2) Scattering (ਖਿੰਡਣ) (3) Refraction (4) Reflection
Answer: (2) Blue light scatters more in the atmosphere.
70. What is lens formula? (ਲੈਨਜ ਦਾ ਸੂਤਰ ਕੀ ਹੈ?)
(1) 1/v - 1/u = 1/f (2) 1/v + 1/u = 1/f (3) 1/u - 1/v = 1/f (4) None
Answer: (1) Standard lens formula.
71. Power of a lens is reciprocal of its: (ਲੈਨਜ ਦੀ ਸਮਰੱਥਾ ਕਿਸ ਦੇ ਉਲਟ ਹੁੰਦੀ ਹੈ?)
(1) Object distance (2) Image distance (3) Focal length (ਫੋਕਸ ਦੂਰੀ) (4) None
Answer: (3) P = 1/f.
72. For the birth of a boy, which chromosomes need to combine? (ਲੜਕੇ ਦੇ ਪੈਦਾ ਹੋਣ ਲਈ ਕਿਹੜੇ ਗੁਣਸੂਤਰ?)
(1) XX (2) YY (3) XY (4) XZ
Answer: (3) XY results in a male.
73. In asexual reproduction, how many organisms take part? (ਅਲਿੰਗੀ ਜਣਨ ਵਿੱਚ ਕਿੰਨੇ ਜੀਵ?)
(1) Two (2) Three (3) One (ਇੱਕ) (4) No one
Answer: (3) Only one parent is involved.
74. Filtering units in human kidneys are called: (ਗੁਰਦੇ ਵਿੱਚ ਫਿਲਟਰੀਕਰਨ ਇਕਾਈਆਂ?)
(1) Neuron (2) Renal artery (3) Nephron (ਨੇਫਰਾਨ) (4) None
Answer: (3) Nephrons are the functional units.
75. Which instrument measures blood pressure? (ਲਹੂ ਦਾ ਦਬਾਓ ਮਾਪਣ ਵਾਲਾ ਯੰਤਰ?)
(1) Seismograph (2) Sphygmomanometer (3) Barometer (4) None
Answer: (2) Specifically designed for BP.
76. Chemical formula of Plaster of Paris (POP)? (ਪਲਾਸਟਰ ਆਫ ਪੈਰਿਸ ਦਾ ਸੂਤਰ?)
(1) CaSO4.2H2O (2) CaSO4.H2O (3) CaSO4.1/2H2O (4) CaSO4
Answer: (3) It is calcium sulphate hemihydrate.
77. Which planet's atmosphere has dense clouds of sulphuric acid? (ਕਿਹੜੇ ਗ੍ਰਹਿ 'ਤੇ ਸਲਫਿਊਰਿਕ ਤੇਜਾਬ ਦੇ ਬੱਦਲ ਹਨ?)
(1) Saturn (2) Venus (ਸ਼ੁੱਕਰ) (3) Mercury (4) Jupiter
Answer: (2) Venus has a highly acidic atmosphere.
78. If one element in an alloy is mercury, it is called: (ਮਿਸ਼ਰਤ ਧਾਤ ਵਿੱਚ ਜੇਕਰ ਇੱਕ ਧਾਤ ਪਾਰਾ ਹੋਵੇ?)
(1) Amalgam (ਅਮੈਲਗਮ) (2) Solder (3) Silicon (4) None
Answer: (1) Mercury alloys are amalgams.
79. How many carats of gold are used for Jewellery? (ਗਹਿਣੇ ਬਣਾਉਣ ਲਈ ਕਿੰਨੇ ਕੈਰਟ ਸੋਨਾ?)
(1) 24 (2) 20 (3) 22 (22 ਕੈਰਟ) (4) 23
Answer: (3) 22ct is preferred for strength in jewelry.
80. In diamond, one carbon atom is bonded with how many others? (ਹੀਰੇ ਵਿੱਚ ਕਾਰਬਨ ਪਰਮਾਣੂ ਕਿੰਨੇ ਹੋਰਾਂ ਨਾਲ?)
(1) One (2) Two (3) Three (4) Four (ਚਾਰ)
Answer: (4) Forms a tetrahedral structure.
81. Small finger-like projections in the small intestine: (ਛੋਟੀ ਆਂਦਰ ਵਿੱਚ ਉਂਗਲੀਆਂ ਵਰਗੇ ਵਾਧਰੇ?)
(1) Villi (ਵਿਲਾਈ) (2) Bile duct (3) Pancreas (4) Intestine Juice
Answer: (1) Villi increase surface area for absorption.
82. UV radiation forms ______ from oxygen molecules. (ਪਰਾਵੈਂਗਣੀ ਵਿਕਿਰਨਾਂ ਆਕਸੀਜਨ ਤੋਂ ਕੀ ਬਣਾਉਂਦੀਆਂ ਹਨ?)
(1) CO2 (2) Ozone (ਓਜ਼ੋਨ) (3) CO (4) All
Answer: (2) O2 + UV → O3.
83. What is the respiratory pigment in humans? (ਮਨੁੱਖਾਂ ਵਿੱਚ ਸਾਹ ਲੈਣ ਵਾਲਾ ਪਿਗਮੈਂਟ?)
(1) Phytochrome (2) Cytochrome (3) Haemoglobin (ਹੀਮੋਗਲੋਬਿਨ) (4) Pepsin
Answer: (3) Carries oxygen in the blood.
84. An atom bomb is based on: (ਪਰਮਾਣੂ ਬੰਬ ਕਿਸ ਸਿਧਾਂਤ ਤੇ?)
(1) Nuclear Fission (ਵਿਖੰਡਨ) (2) Fusion (3) Liquid drop (4) None
Answer: (1) Splitting of heavy nuclei.
85. Covalent bonds in Ethane (C2H6)? (ਈਥੇਨ ਵਿੱਚ ਕਿੰਨੇ ਸਹਿਸੰਯੋਜਕ ਬੰਧਨ?)
(1) 3 (2) 7 (ਸੱਤ) (3) 8 (4) 10
Answer: (2) 6 C-H bonds and 1 C-C bond.
86. Product of Ca(OH)2 + CO2 → ? (ਕਿਰਿਆ ਦੇ ਉਤਪਾਦ ਕੀ ਹੋਣਗੇ?)
(1) Ca+Ca(OH)2 (2) CaCO3+H2O (3) Ca2CO3+H2O (4) None
Answer: (2) Forms calcium carbonate and water.
87. Type of reaction: Zn + CuSO4 → ZnSO4 + Cu? (ਇਹ ਕਿਸ ਪ੍ਰਕਾਰ ਦੀ ਕਿਰਿਆ ਹੈ?)
(1) Neutralization (2) Combination (3) Decomposition (4) Displacement (ਵਿਸਥਾਪਨ)
Answer: (4) Zinc displaces copper.
88. Which particle is smallest? (ਸਭ ਤੋਂ ਛੋਟਾ ਕਣ ਕਿਹੜਾ ਹੈ?)
(1) Atom (ਪਰਮਾਣੂ) (2) Compound (3) Element (4) Mixture
Answer: (1) The basic unit of matter.
89. Effective resistance of 3Ω triangle at P and Q? (ਪ੍ਰਤੀਰੋਧਾਂ ਦਾ ਕੁੱਲ ਪ੍ਰਤਿਰੋਧ?)
Answer: (3) (3+3) in parallel with 3 gives 2Ω.
90. pH increasing from 7 to 14 means: (pH ਮਾਨ 7 ਤੋਂ 14 ਵੱਲ ਵਧ ਰਿਹਾ ਹੈ?)
(1) OH- increasing (ਸੰਘਣਤਾ ਵਿੱਚ ਵਾਧਾ) (2) H+ increasing (3) H2O increasing (4) None
Answer: (1) Basic strength increases with OH- concentration.
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Important Note
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