Chemistry — Quiz

Chemistry MCQ Question - Basic Concept

50 questions · Test your knowledge

1 Combustion analysis is performed to determine
2 Mostly elements have fractional atomic masses because of
3 Isotopes differ in
4 Which of the following is not a macromolecule?
5 Which of the following methods is used to estimate hydrogen in an organic compound?
6 Isotopes of the same elements has
7 The nucleus of an atom of every element will always contain
8 When cationic molecular ions are allowed to pass through strong magnetic field in mass spectrometer which of the following ions is fallen
9 When 0.5 mole of phosphoric acid is dissolved in aqueous solution how many moles of -ve and +ve ions are collected altogether?
10 For which of the following compounds the term empirical formula cannot be applied?
11 Dempsters mass spectrometer has number of zones / parts
12 The properties of an element mosly corresponds to that isotope which has greater
13 1 a.m.u =
14 Which of the following has strongest intermolecular forces of attraction?
15 Which has strongest bonding in the solid state?
16 When substance moves from a solid to a liquid state all of the following changes occur except
17 When the atoms of third layer are arranged in such a way that they directly lie above the atoms of first layer then this arrangement is called
18 In order to mention the boiling point of water at 110?C the external pressure should be
19 Which one is false for evaporation?
20 Vapour pressure of water at 100?C is
21 Which one of the following does not show hydrogen bonding ?
22 Liquid crystal is discovered by
23 Which one is a conductor but is not malleable?
24 Hydrogen bonding is involved in
25 Actually the vapour pressure on the surface of liquid in the flask is equal to
26 Forces of attraction which may be present between all kinds of atoms and molecules are
27 The density of water may be
28 The quantity of heat required to convert one mole of liquid into its vapours at its boiling point is called molar heat of
29 Steam causes more sever burn than the boiling water because it possesses.
30 Water has maximum density at
31 The conversion of vapours back into their liquid state is called
32 Formation of vapours from the surface of a liquid is called
33 When water freezes at 0?C its density decreases due to
34 The ttractive forces between the partial positive end of one molecule and partial negative end of other molecule are called
35 The boiling point increases down the zero group element due to
36 Vapour pressure is not affected by
37 Rising of a wetting liquid in a capillary tube is due to
38 Table salt crystallizes with a
39 The number of formula units in 29.25g of common salt
40 During which process empty spaces between particles become minimum?
41 Liquid gets the shape of the container when it is poured into it. Which one of the following reasons justifies it?
42 Which one of the following has highest volatility
43 Molar heat of vaporization of water is
44 If we provide very high amount of heat to a liquid its boiling point will
45 Crystallites are present in
46 A solid may be made up of
47 A malleable solid is one which can be
48 Amorphous substances posses
49 Crystalline solids can be identified easily from their
50 Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to
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