The carbon dioxide content in the air that we exhale is about...? Mcqs

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The carbon dioxide content in the air that we exhale is about...?

(A) 4%
(B) 9%

(C) 15%
(D) 16%

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Trachoma is the disease of the________ ...?

(A) Brain
(B) Spinal cord

(C) Larynx
(D) Eye

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For which system does the equilibrium constant, Kc has units of concentration....?

(A) N2(g) + 3H2(g) ⇌ 2NH3(g)
(B) N2(g) + 02(g) ⇌ 2NO

(C) H2(g) +12(g) ⇌ 2HI(g)
(D) CO2(g) + H3(g) ⇌ CO + H2O(l)

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Which of the following is the main characteristic of electromagnets that makes them useful in cranes and doorbells...?

(A) They are very strong
(B) They are permanent

(C) They can be switched on and off
(D) They are very heavy

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Diameter of Sun is_____________...?

(A) 12 Lakh kms
(B) 13 Lakh kms

(C) 14 Lakh kms
(D) 15 Lakh kms

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The separation between two consecutive compressions of the sound wave is called...?

(A) Time period
(B) Frequency

(C) Amplitude
(D) Wavelength

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Infants (children) should be immunized with BCG (Bacille Calmette-Guerin) vaccines against...?

(A) Malaria
(B) Tuberculosis

(C) Measles
(D) Hepatitis

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In the human body, the lungs remove which gas from the blood...?

(A) Nitrogen
(B) Hydrogen

(C) Carbon Dioxide
(D) Argon

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When a substance is dissolved in a liquid and no new substance is formed. What will these substances are called...?

(A) Solute
(B) Solution

(C) Compound
(D) None

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The color that is least deviated by a prism ______...?

(A) Violet ray
(B) Red ray

(C) Green ray
(D) Yellow ray

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