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Q1. 90 g Mohr’s salt is
dissolved into 2 litre water. Equivalent weight of salt is equal to
(1) Molar
weight of salt
(2) Molar weight / 4
(3) Molar
weight / 6
(4) Molar weight / 8
Q2. 50 ml, centimolar KMnO4 solution is just sufficient to oxidise 75ml of
a H2O2
solution in the presence of H2SO4.
The correct statement for this H2O2 solution is
(1) Molarity
of H2O2 solution is 1/30
(2) Normality
of H2O2 solution is 1/30
(3) Volume
strength of H2O2 solution is 2 V
(4) Weight
percentage of H2O2 in
solution is 40%
Q3. Solution containing 0.34 gm AgNO3 is
mixed with HCl solution containing 0.146 gm HCl.
The no. of AgCl molecules in
the solution is
(1) 6.023
× 1023
(2) 6.023 × 1021
(3) 12.046
× 1020
(4) 24.092
× 1021
Q4. 5 gm impure of calcium hydroxide is dissolved
into 800 ml of water. In 100 ml
of this solution 20 ml of decinormal HCl is
added. The acidic solution is formed
neutralized by 50 ml of 1/50 N NaOH
solution. Percentage purity of Ca(OH)2 is
(1) 44%
(2) 5.92%
(3) 14.34%
(4) 7.5%
Q5. In the following reaction, correct statement
is
K2Cr2O7 + 8H+ + 3S2O3– – 2Cr3+ + K2SO4 + 3S + 4H2O.
(1) Equivalent
weight of K2Cr2O7 = 1/3 Molar wt.
(2) Equivalent
weight of K2Cr2O7 = Molar wt.
(3) Equivalent
weight of K2Cr2O7 = 1/5 Molar wt.
(4) Equivalent
weight of K2Cr2O7 = 1/6 Molar wt.
Q6. What weight of 80% pure NaOH required to
neutralize 10% pure 100 ml 1 M H2SO4 solution?
(1) 1
gm
(2) 0.2 gm
(3) 4
gm
(4) 0.5 gm
Q7. When 20 moles of SO2 and 15
moles of O2 are passed over catalyst. 10 moles of SO3
are formed.
The volume (at NTP) of resulting gaseous mixture is
(1) 22.4
lit
(2) 448 lit
(3) 112
lit
(4) 672 lit
Q8. 10.6 gm mixture containing NaCl and Na2CO3 is dissolved in a solution of CaCl2
to
form 5 gm CaCO3 as precipitate. The percentage of NaCl in mixture
is
(1) 25%
(2) 50%
(3) 75%
(4) 20%
Q9. One gram metal (equivalent wt. 40) was burnt
in excess of atmospheric oxygen.
The formed metal oxide was dissolved in 100 ml
water and solution is diluted upto 5 litre.
Normality of solution is
(1) 5
× 10–3
(2) 2 × 10–2 N
(3) 5
N
(4) 0.2 N
Q10. x gm of NaOH required to neutralise 15 meq of
HCl. To neutralise same meq
of H2SO4 and H3PO4 the weight of NaOH will be
(1) 2x
g and 3x g respectively
(2) 1/2g
and 1/3g respectively
(3) x
g for each
(4) 3x
g and 2x g respectively
Q11. 100 ml Na2CO3.H2O
solution containing 0.31 gm Na2CO3.H2O
is mixed with same volume
of decimolar H2SO4 solution. Resulting solution is
(1) Acidic
(2) Neutral
(3) Alkaline
(4) Cannot
determine by above data
Q12. What is the minimum
molecular weight of an organic compound containing 2% carbon by weight?
(1) 200
g
(2) 400 g
(3) 600
g
(4) 800 g
Q13. 4 gm propane and 48 gm O2 are
allowed to react to the maximum possible extent to
form only CO and H2O. volume of CO formed is (at NTP)
(1) 5.6
lit
(2) 11.2 lit
(3) 6.1
lit
(4) 22.4 lit
Q14. For the reaction A(g) ↔ 2B(g) + 1/2C(s). What
is the mole fraction of A after
decomposition at a constant volume and
temperature, if the initial pressure is 400 mmHg
and the pressure at any time
is 600 mmHg ?
(1) 0.4
(2) 0.27
(3) 0.33
(4) 0.56
Q15. A fixed weight of Ca is converted into CaCO3 and
then completely neutralised by 500 mL
decimolar HCl (no acid left at the end).
The calcium chloride formed is converted into plaster
of paris. Weight of
plaster of paris formed is
(1) 5
gm
(2) 4.2 gm
(3) 8.8
gm
(4) 3.625 g
Q16. A metallic oxide (MO) contains 40% oxygen. The
equivalent weight of M is
(1) 24
(2) 12
(3) 6
(4) 48
Q17. When 400 g of a 20% solution by weight was
cooled, 50 g of solute precipitated.
The percentage concentration of remaining
solution is
(1) 8.57
(2) 12.25
(3) 15
(4) 7.5
Q18. 10 ml of gaseous hydrocarbon on combustion
gives 40 ml of CO2(g) and 50 ml
of H2O (vapours). The hydrocarbon is
(1) C4H5
(2) C8H10
(3) C4H8
(4) C4H10
Q19. 4.9 g KClO3 is heated for some time then weight loss was
0.384 g.
The percentage of KClO3 decomposed is
(1) 20
(2) 30
(3) 40
(4) 80
Q20. 0.5 g of a sample of H2O2 required 20 ml 1 N KMnO4 in a
titration in the presence of H2SO4.
Purity of H2O2 is
(1) 17
%
(2) 34 %
(3) 51
%
(4) 68 %
Q21. The ratio of the number of molecules contained
in 1g of NH3 and 1g of N2 is
(1) 17
: 28
(2) 28 : 17
(3) 17
: 14
(4) 14 : 17
Q22. 150 ml 1/10M KMnO4 in
acidic medium can oxidise completely
(1) 150
ml 1M Fe2+
(2) 75 ml 1M Fe2+
(3) 75
ml 1M C2O42–
(4) 150
ml 1M C2O42–
Q23. 1 gm of an oxalate sample (C2O42– + Impurities) is dissolved in water and
diluted upto 100 ml.
10 ml of this solution is completely oxidised with 15 ml 1/10N KMnO4.
10 ml of this solution is completely oxidised with 15 ml 1/10N KMnO4.
The percentage purity of the sample is
(1) 33
(2) 66
(3) 78
(4) 90
Q24. 10 ml of1/2N NaOH, 30 ml of1/10N KOH, 75 ml of 1/5N
Ba(OH)2 are mixed together.
The normality of resulting
solution is
(1) 0.02
N
(2) 0.2 N
(3) 0.5
N
(4) 0.05 N
Q25. A piece of Ca is disolved in 40 ml of 1/10N HCl
completely. The excess of acid was
neutralized by 15 ml of 1/5N NaOH. The
weight of Ca is
(1) 0.24
g
(2) 0.024 g
(3) 0.012 g
(4) 0.40 g
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