The biological functions which perform gaseous exchange...? Mcqs

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The biological functions which perform gaseous exchange...?

(A) Photosynthesis
(B) Respiration

(C) Both a and b
(D) Growth

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Electric current is measured by ____...?

(A) Ammeter
(B) Voltmeter

(C) Ohmmeter
(D) Multimeter

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Louder sound is characterized by which of the following...?

(A) High Frequency
(B) Low Frequency

(C) High Amplitude
(D) Low Amplitude

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Gravitational force is always ______...?

(A) Repulsive
(B) Attractive

(C) Both
(D) None of these

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Pedosphere is sum of_____________...?

(A) Organisms
(B) Soil and water

(C) Air
(D) All of above

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Stomata present in leaves help the plant in ______...?

(A) Absorption
(B) Evaporation

(C) Chlorophyll
(D) Chromoplast

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The three elements needed for healthy growth of plants are __________...?

(A) N, P, K
(B) N, C, P

(C) N, K,
(D) N, S, P

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What is the photosynthesis equation in plants...?

(A) 6CO2 + 6H2O → C6H12O6 + 6O2
(B) 6CO2 + 6H2O → C6H12O6 + 6O3

(C) 6CO2 + 6O2 → C6H12O6 + 6H2O
(D) 6H2O + 6O2 → C6H12O6 + 6CO2

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Interaction between highly electron deficient hydrogen and highly electronegative atom is called...?

(A) Covalent bond
(B) Ionic bond

(C) Hydrogen bond
(D) Metallic bond

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The approximate intensity level of the sound which can cause damage to the ear drum is...?

(A) 20 dB
(B) 60 dB

(C) 100 dB
(D) 160 dB

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