The material that comes out of a volcano at the time of eruption is:...? Mcqs

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The material that comes out of a volcano at the time of eruption is:...?

(A) Solid, liquid, gaseous
(B) Solid and liquid

(C) Solid and gaseous
(D) None of these

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The rocks formed out of layers of sediment bonded together are known as _______________...?

(A) Metamorphic rocks
(B) Sedimentary rocks

(C) Igneous rocks
(D) All of the above

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Plastic is made of materials including _____...?

(A) Recycled Plastic
(B) Rocks & Sand

(C) Coal, Oil, Natural Gas
(D) None of the these

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kilohertz (kHz) is a unit which measures...?

(A) Power used by a current of one ampere
(B) Electromagnetic radio wave frequencies

(C) Voltage
(D) Electric resistance

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Pressure in gases is due to _____...?

(A) Collision of molecules with walls of containers
(B) Vibration of molecules

(C) Rotation of molecules
(D) Electromagnetic attraction between molecules

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The main constituent of Pearls are: ______________...?

(A) Calcium oxide &Ammonium Chloride
(B) Calcium Carbonate &Megnesium Carbonate

(C) Aragonite & Conchiolin
(D) None of these

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Permanent hardness of water can be removed by adding __________...?

(A) Chlorine
(B) Washing soda

(C) Bleaching powder
(D) None of these

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A (an) ________ is the smallest possible particle of an element that can combine to form new compounds....?

(A) Molecule
(B) Atom

(C) Compound
(D) Element

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Which gas does a Photocopier machine produce...?

(A) Ozone
(B) carbon dioxide

(C) Sulfur dioxide
(D) None of these

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The essential elements for plant growth are...?

(A) Carbon (C), Oxygen (O), and Hydrogen (H)
(B) Phosphorus (P), Potassium (K), and Nitrogen (N)

(C) Helium (He), Neon (Ne), and Argon (Ar)
(D) Calcium (Ca), Magnesium (Mg), and Sulfur (S)

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