Sound of frequency below 20 Hz is:___________...? Mcqs

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Sound of frequency below 20 Hz is:___________...?

(A) Audiosonic
(B) Infrasonic

(C) Ultrasonic
(D) Supersonic

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The disease “Itai Itai “is caused by____________...?

(A) Carbon
(B) Cadmium

(C) Manganese
(D) None of these

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Which statement is incorrect about particles in solids...?

(A) Particles are in loose clusters
(B) Particles are closely packed

(C) Particles are in regular pattern
(D) Particles have small spaces between them

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The list that shows electromagnetic waves in order of an increasing wavelength is _____...?

(A) Microwaves, X-rays, Gamma-rays
(B) Microwaves, Gamma-rays, X-rays

(C) X-rays, gamma-rays, Microwaves
(D) Gamma-rays, X-rays, Microwaves

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Which of the following type of Coal, has maximum carbon content...?

(A) Peat
(B) Lignite

(C) Anthracite
(D) Bituminious

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Which law states that “equal volumes of all gases, at the same temperature and pressure, have the same number of molecules...?

(A) Boyle’s law
(B) Charles’ law

(C) Gay-Lussac’s law
(D) Avogadro’s law

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Which is not a cause of land pollution...?

(A) Plastic bags, bottles, glass bottles, tin cans
(B) Vegetables and fruit cutting

(C) Animal wastes
(D) All of these are causes of land pollution

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Orbital period of the planet Mercury around the sun is _____________...?

(A) 88 days
(B) 365 days

(C) 2 years
(D) 98 days

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Two bulbs are connected in a series circuit. One bulb blows (blast), what will happen to the other bulb...?

(A) Will glow brighter
(B) Also blow (blast)

(C) Remains same
(D) Will glow dimmer

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____________ have no charge...?

(A) Neutrons
(B) Protons

(C) Electrons
(D) None of These

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