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Crystals can be classified into _______ basic crystal units. (A) 3 (B) 7 (C) 14 (D) 4

asked Jun 19, 2021 in chemistry by Doubtly (98.9k points)

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Which of the following is a crystalline solid? (A) Glass (B) Rubber (C) Plastic (D) Sugar

asked Jun 19, 2021 in chemistry by Doubtly (98.9k points)

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Amorphous solids are _______. (A) true solid substances (B) substances with ordered

asked Jun 19, 2021 in chemistry by Doubtly (98.9k points)

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Amorphous substances have _______. (i) definite heat of fusion (ii) only short range

asked Jun 19, 2021 in chemistry by Doubtly (98.9k points)

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Amorphous solids _______. (A) possess sharp melting points

asked Jun 19, 2021 in chemistry by Doubtly (98.9k points)

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A solid having irregular shape is called _______ solid

asked Jun 19, 2021 in chemistry by Doubtly (98.9k points)

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The ability of crystalline solids to change values of physical properties when measured in different directions is called _______.

asked Jun 19, 2021 in chemistry by Doubtly (98.9k points)

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Graphite, diamond and fullerene are the polymorphic forms of _______.

asked Jun 19, 2021 in chemistry by Doubtly (98.9k points)

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Which among the following solids is NOT soft?

asked Jun 19, 2021 in chemistry by Doubtly (98.9k points)

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The area of the region bounded by the curve y = 2x – x2 and x – axis is

asked May 28, 2021 in mathematics by Doubtly (98.9k points)

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The point on the curve 6y = x3 + 2 at which y – co-ordinate is changing 8 times as fast as x– co-ordinate is ______________

asked May 28, 2021 in mathematics by Doubtly (98.9k points)

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The joint equation of bisectors of angles between lines x = 5 and y = 3 is ___________

asked May 28, 2021 in mathematics by Doubtly (98.9k points)

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Derivative of log (secθ + tanθ ) with respect to secθ at θ = π/4 is ____________

asked May 28, 2021 in mathematics by Doubtly (98.9k points)

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In Δ ABC (a – b)2 cos2 2 c + (a + b)2 sin2 2 c =

asked May 27, 2021 in mathematics by Doubtly (98.9k points)

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If r.v. X : waiting time in minutes for bus and p.d.f. of X is given by

asked May 27, 2021 in mathematics by Doubtly (98.9k points)

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Lactic acid and glycolic acid are the monomers used for preparation of polymer

asked Apr 13, 2021 in chemistry by anonymous

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Which of the following polymers is used to manufacture clothes for firefighters?

asked Apr 13, 2021 in chemistry by anonymous

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The top of a ladder 6 metre long is resting against a vertical wall on a level pavement,

asked Apr 11, 2021 in mathematics by Doubtly (98.9k points)

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Let 'M' be the mass and 'L' be the length of a thin uniform rod. In first case, axis of rotation

asked Mar 27, 2021 in Physics by Topper11 (2.8k points)

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A stone of mass 1 kg is tied to a string 2m long and is rotated at constant speed of 40 ms^-1 in a vertical circle

asked Mar 26, 2021 in Physics by Topper11 (2.8k points)

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