Which one of the following is not a sign of physical change...? Mcqs

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Which one of the following is not a sign of physical change...?

(A) Change that can be reversed
(B) The substance does not turn into a new substance

(C) A release of gas
(D) None

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Which take the shape of a container they are placed in...?

(A) Liquids
(B) Solids

(C) Both A and B
(D) None

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In whole Periodic Table which element Is Most Reducing Agent ...?

(A) Chlorine
(B) lithium

(C) Helium
(D) Neon

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Microphone converts sound energy into ___________...?

(A) Microwaves
(B) Electrical signals

(C) Optical Signals
(D) Heat energy

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Wireless transmission can be done via _____________...?

(A) A Infrared waves
(B) Radio waves

(C) Microwaves
(D) All of these

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Homologous means...?

(A) Same Chemical Properties
(B) Same Chemical Numbers

(C) Different Chemical Properties
(D) Different Chemical Numbers

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How many light years the earth and sun are away from the center of Milky Way galaxy...?

(A) 27000
(B) 23000

(C) 20000
(D) 25000

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What are Columns in Periodic table called...?

(A) Period
(B) Group

(C) Verticals
(D) Perpendiculars

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All of the following substances are crystalline except_____________...?

(A) Ice
(B) Diamond

(C) Sucrose
(D) Plastic

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Bunsen burner is made stable by ______...?

(A) Increasing its length
(B) Increasing its mass

(C) Decreasing its base area
(D) Increasing its base area

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