Question 1 of 20 4,306 total questions
Which of the following gases will diffuse most rapidly?
The vapour pressure of a liquid depends on:
A I
B I and II
C I and III
D II and III
The general gas equation was deprived from______?
A Boyle's and Gay Lussac's laws
B Boyle's and Graham's laws
C Boyle's and Charles' laws
D Dalton's atomic theory
Consider the following reaction equation:4 2- (aq) + 2H+ (aq) + ye- \(\to\) SO4 2- (aq) + H2 O(1) .
The number of oxygen molecules present in 16.0g of the gas is ______?23 ]
A 6.02 x 1022
B 6.02 x 1023
C 3.01 x 1023
D 1.51 x 1023
Consider the following reaction equation:
A 1.12dm3
B 2.24dm3
C 3.72dm3
D 4.48dm3
Which of the following trioxonitrate(V) salts would decompose on heating to form a metal?
A Cu(NO3 )2
B AgNO3
C Pb(NO3 )2
D KNO3
Which of the following substances when boiled with aqueous solution of sodium hydroxide would be hydrolyzed?
A i
B ii
C i and ii
D ii and iii
Which of the following oxides is ionic?
The shape of a graphite crystal is
A Tetrahedral
B Pyramidal
C Octahedral
D Hexagonal
To which group and period respectively does an element with 15 electrons belong?
A 3 and 3
B 3 and 5
C 5 and 3
D 5 and 5
The bond formed when ammonia reacts with hydrogen ion to form ammonium ion is
A Covalent
B Dative
C Hydrogen bond
D Ionic
The number of unpaired electrons in an atom of an element 8 Q is _______?
The alkaline earth metals have similar chemical properties because________?
A They are in the same period
B Their salts are colourless
C They have the same number of valence electrons
D They are very reactive
Which of the following halogens is solid at room temperature?
A Bromine
B Chlorine
C Flourine
D Iodine
The gas given off when ethanol reacts with sodium is
A Carbon(IV)oxide
B Hydrogen
C Methane
D Oxygen
The following transition metal ions would be coloured in aqueous solution except________?
Which of the following pairs of compounds belongs to the same homologous series?
A C3 H8 and C3 H6
B C4 H10 and C5 H10
C C2 H4 and C4 H10
D C2 H6 and C4 H10
Which of the following pairs of elements forms amphoteric oxides?
A Be and Mg
B Na and K
C B and Al
D Si and Pb
A metallic ion Z\(^{2+}\) with an inert gas structure contains 18 electrons. How many protons are contained in this ion?
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