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The ratio between the neutrons in C and Si with respect to atomic masses 12 and 28 is:
(1) 2 : 3
(2) 3 : 2
(3) 3 : 7
(4) 7 : 3
Ans: 3 : 7
Characteristics of homologous series (i) All the members of a series can be presented by the general formula. For instance, the members of the alcohol family are illustrated b
which metal is highly reactive?
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When an electron revolves in a stationary orbit then: (1) It absorbs energy (2) It emits radiation (3) Its energy remains constant (4 )It gains kinetic energy Ans:
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Amongst the following covalent bonding is found in: (1) Sodium chloride (2) Magnesium chloride (3) Water (4) Brass Ans: Water
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