In night, when photosynthesis is stopped, plants__________...? Mcqs

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In night, when photosynthesis is stopped, plants__________...?

(A) take in Carbon Dioxide
(B) give off Oxygen

(C) give off Carbon Dioxide
(D) None of these

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Surfactants reduce the ______ of water....?

(A) Viscosity
(B) Surface tension

(C) Boiling point
(D) Melting Point

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Animal that eat the primary consumers are called...?

(A) Tertiary Consumers
(B) Secondary Consumers

(C) Primary Consumers
(D) None

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The process of separation of an insoluble solid from a liquid by passing it through filter paper is called...?

(A) Filtration
(B) Decantation

(C) Sedimentation
(D) Centrifugation

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The point that lies directly above the source of an earthquake is known as _______________ ...?

(A) Earthquake Center
(B) Epicenter

(C) Gravitational Center
(D) Geological Center

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Ageusia is the loss of which sense...?

(A) Taste
(B) Smell

(C) Memory
(D) Sight

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Increase in rate of breathing is due to the following...?

(A) Increase CO2 in blood
(B) Increase O2 in blood

(C) Decrease CO2 in blood
(D) Decrease O2 in blood

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Which of the following is liquid fuel ...?

(A) Patrol
(B) Kerosene

(C) Paraffin oil
(D) All of above

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Which is used to remove dissolved physical and chemical impurities from water is called ____...?

(A) Distillation
(B) Chlorination

(C) Filtration
(D) Sedimentation

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A radioactive nuclide emits a β-particle. The atomic number (proton number) of the nucleus number of ______...?

(A) Stays the same
(B) Decreases by 2

(C) Increases by 1
(D) Decreases by 4

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