General Science Practice Questions
Q) An effective Coriolis force results from : (A) Solar system (B) Earth rotation (C) interior of the Earth (D) Colorado and Gulf Streams
Q) Consider the following statement and conclusions which can be drawn from it. Statement: In starting a loaded cart, one has to push harder than to keep it moving. Conclusion: (A) The weight of a moving object is less (B) The wheels tend to slip initially (C) There is less friction once the cart starts moving (D) Practice makes perfect
Q) Which physical quantity is represented by the ratio of momentum and velocity of the body? (A) Velocity (B) Acceleration (C) Mass (D) Force
⇒ किसी scalar को vector से गुणा करने पर परिणाम भी vector ही होता है।
⇒ Galileo was the first to clearly define Speed (v) = Distance traveled / Time taken
Q) A parsec, a unit of distance is equal to – (A) 4.25 light-years (B) 3.25 light-years (C) 4.50 light-years (D) 3.05 light-years
Q) Chemically ‘Plaster of Paris’ is : (A) Calcium Sulphate (B) Calcium Carbonate (C) Calcium Oxide (D) Calcium Oxalate
Q) The unit of the weight is – (A) kg (B) N.kg (C) N (D) N.m
Q) Which acid is used in the soda acid fire extinguisher experiment? (A) Hydrochloric acid (B) Acetic acid (C) Sulfuric acid (D) Nitric acid
⇒ In a soda-acid fire extinguisher, the acid used is sulfuric acid (H₂SO₄). This acid reacts with sodium bicarbonate (NaHCO₃) to produce carbon dioxide gas, which is then used to extinguish the fire.
Q) Bleaching powder is prepared by the reaction of chlorine with: (A) Quick lime (B) Lime water (C) Slaked lime (D) Baking soda
Q) Formula of washing soda is: (A) Na₂CO₃·5H₂O (B) Na₂CO₃·10H₂O (C) NaHCO₃ (D) CaCO₃
Q) Which gas is produced at the cathode during the electrolysis of brine? (A) Oxygen (B) Hydrogen (C) Chlorine (D) Nitrogen
Q) Water of crystallisation in copper sulphate is: (A) 2 (B) 5 (C) 10 (D) 1
Q) Very hard setting of plaster of paris can be done by adding : (A) Sodium Chloride (B) Borax (C) Alum (D) Sodium Carbonate
Q) One nanometre is equal to – (A) 10⁻⁶ cm (B) 10⁻⁷ cm (C) 10⁻⁸ cm (D) 10⁻⁹ cm
Q) One micron is equal to – (A) 1/10 mm (B) 1/100 mm (C) 1/1000 mm (D) 1/10,000 mm
Q) Which one of the following is not correctly matched? (A) Decibel – Unit of sound intensity (B) Horsepower – Unit of power (C) Nautical miles – Unit of naval distance (D) Celsius – Unit of heat
⇒ A megawatt (MW) is a unit of power represents the rate at which energy is generated.
Q) Which one of the following is not the unit of heat? (A) Calorie (B) Erg (C) Joule (D) Centigrade
Q) The unit of pressure is : (A) kg/cm² (B) kg/cm (C) kg/mm (D) kg/cm³
Q) One pikogram is equal to – (A) 10⁻⁶ gram (B) 10⁻⁹ gram (C) 10⁻¹² gram (D) 10⁻¹⁵ gram
Q) Which one of the following quantities does not have unit? (A) Stress (B) Force (C) Strain (D) Pressure
Q) NTU is the unit for measuring : (A) Pressure of water (B) Temperature of water (C) Acidity of water (D) Turbidity of water
Q) The smallest unit of length is – (A) Micron (B) Nanometre (C) Angstrom (D) Fermimetre
Q) What is measured in cusec? (A) Purity of water (B) Depth of water (C) Flow of water (D) Quantity of water
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