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

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

(A) No change in composition
(B) A release of gas

(C) Change in colour, temperature, smell
(D) Production of a new material

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Who came up with three laws of motion...?

(A) Galileo
(B) Albert Einstein

(C) Issac Newton
(D) Hubble

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The motion of a falling ball towards Earth is due to the _____...?

(A) Weightlessness
(B) Gravitational force

(C) Acceleration due to gravity
(D) Both 'a' and 'b’

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When the angle of refraction is 90° and the refractive index for water is 1. 33, the critical angle is ______...?

(A) 48.8°
(B) 50.0°

(C) 49.1°
(D) 51.0°

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Fruit plant that flowers only once in lifetime...?

(A) Mango
(B) Ground Nut

(C) Banana
(D) Peach

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Day and night are the results of__________...?

(A) Earth rotation around its axis
(B) Earth revolution

(C) Earth rotation accompanied with its revolution.
(D) None of these

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When carbon dioxide is released in the dough, what will be result...?

(A) It rises up
(B) It rises down

(C) It became harder
(D) None

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Spectroscopy is the interaction of light with ______...?

(A) Liquid
(B) Solid

(C) Gas
(D) Matter

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Degree of variation within or among the species exists on different regions of the earth called...?

(A) Adaptation
(B) Extinction

(C) Evolution
(D) Biodiversity

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Quantitative observation is the use of _____...?

(A) Senses
(B) Equipment

(C) Guess
(D) Ratio

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