-
question_answer1)
How much of NaOH is required to neutralise 1500 \[c{{m}^{3}}\]of 0.1 \[N\,HCl\] (Na = 23) [KCET 2001]
A)
40 g done
clear
B)
4 g done
clear
C)
6 g done
clear
D)
60 g done
clear
View Solution play_arrow
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question_answer2)
How much water should be added to 200 c.c of semi normal solution of \[NaOH\]to make it exactly deci normal [AFMC 1983]
A)
200 cc done
clear
B)
400 cc done
clear
C)
800 cc done
clear
D)
600 cc done
clear
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question_answer3)
2.76 g of silver carbonate on being strongly heated yield a residue weighing [Pb. CET 2003]
A)
2.16 g done
clear
B)
2.48 g done
clear
C)
2.64 g done
clear
D)
2.32 g done
clear
View Solution play_arrow
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question_answer4)
In the reaction, \[4N{{H}_{3}}(g)+5{{O}_{2}}(g)\to 4NO(g)+6{{H}_{2}}O(g)\], When 1 mole of ammonia and 1 mole of \[{{O}_{2}}\]are made to react to completion
A)
1.0 mole of \[{{H}_{2}}O\]is produced done
clear
B)
1.0 mole of \[NO\]will be produced done
clear
C)
All the oxygen will be consumed done
clear
D)
All the ammonia will be consumed done
clear
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question_answer5)
Haemoglobin contains 0.33% of iron by weight. The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (At. wt. of Fe = 56) present in one molecule of haemoglobin is [CBSE PMT 1998]
A)
6 done
clear
B)
1 done
clear
C)
4 done
clear
D)
2 done
clear
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question_answer6)
What quantity of ammonium sulphate is necessary for the production of \[N{{H}_{3}}\]gas sufficient to neutralize a solution containing 292 g of \[HCl\]? [HCl=36.5; \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\]=132; \[N{{H}_{3}}\]=17] [CPMT 1992]
A)
272 g done
clear
B)
403 g done
clear
C)
528 g done
clear
D)
1056 g done
clear
View Solution play_arrow
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question_answer7)
The percentage of \[{{P}_{2}}{{O}_{5}}\]in diammonium hydrogen phosphate \[{{(N{{H}_{4}})}_{2}}HP{{O}_{4}}\]is [CPMT 1992]
A)
23.48 done
clear
B)
46.96 done
clear
C)
53.78 done
clear
D)
71.00 done
clear
View Solution play_arrow
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question_answer8)
If \[1\frac{1}{2}\]moles of oxygen combine with Al to form \[A{{l}_{2}}{{O}_{3}}\]the weight of Al used in the reaction is (Al=27) [EAMCET 1980]
A)
27 g done
clear
B)
54 g done
clear
C)
49.5 g done
clear
D)
31 g done
clear
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question_answer9)
The percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (atomic weight=78.4). Then minimum molecular weight of peroxidase anhydrous enzyme is [CBSE PMT 2001]
A)
\[1.568\times {{10}^{4}}\] done
clear
B)
\[1.568\times {{10}^{3}}\] done
clear
C)
\[15.68\] done
clear
D)
\[3.136\times {{10}^{4}}\] done
clear
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question_answer10)
\[{{H}_{2}}\] evolved at STP on complete reaction of 27 g of Aluminium with excess of aqueous \[NaOH\] would be [CPMT 1991]
A)
22.4 done
clear
B)
44.8 done
clear
C)
67.2 done
clear
D)
33.6 litres done
clear
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question_answer11)
What is the % of \[{{H}_{2}}O\]in \[Fe{{(CNS)}_{3}}.3{{H}_{2}}O\]
A)
45 done
clear
B)
30 done
clear
C)
19 done
clear
D)
25 done
clear
View Solution play_arrow
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question_answer12)
What weight of \[S{{O}_{2}}\]can be made by burning sulphur in 5.0 moles of oxygen
A)
640 grams done
clear
B)
160 grams done
clear
C)
80 grams done
clear
D)
320 grams done
clear
View Solution play_arrow
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question_answer13)
What is the normality of a 1 M solution of \[{{H}_{3}}P{{O}_{4}}\] [AIIMS 1982]
A)
0.5 N done
clear
B)
1.0 N done
clear
C)
2.0 N done
clear
D)
3.0 N done
clear
View Solution play_arrow
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question_answer14)
Normality of 2M sulphuric acid is [AIIMS 1992]
A)
2N done
clear
B)
4N done
clear
C)
\[\frac{N}{2}\] done
clear
D)
\[\frac{N}{4}\] done
clear
View Solution play_arrow
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question_answer15)
How many g of a dibasic acid (Mol. wt. = 200) should be present in 100 ml of its aqueous solution to give decinormal strength [AIIMS 1992]
A)
1 g done
clear
B)
2 g done
clear
C)
10 g done
clear
D)
20 g done
clear
View Solution play_arrow
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question_answer16)
The solution of sulphuric acid contains 80% by weight \[{{H}_{2}}S{{O}_{4}}\]. Specific gravity of this solution is 1.71. Its normality is about [CBSE 1991]
A)
18.0 done
clear
B)
27.9 done
clear
C)
1.0 done
clear
D)
10.0 done
clear
View Solution play_arrow
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question_answer17)
Mohr's salt is dissolved in dil. \[{{H}_{2}}S{{O}_{4}}\] instead of distilled water to
A)
Enhance the rate of dissolution done
clear
B)
Prevent cationic hydrolysis done
clear
C)
Increase the rate of ionisation done
clear
D)
Increase its reducing strength done
clear
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question_answer18)
Acidified potassium permanganate solution is decolourised by [MNR 1984]
A)
Bleaching powder done
clear
B)
White vitriol done
clear
C)
Mohr's salt done
clear
D)
Microcosmic salt done
clear
View Solution play_arrow
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question_answer19)
Approximate atomic weight of an element is 26.89. If its equivalent weight is 8.9, the exact atomic weight of element would be [DPMT 1984]
A)
26.89 done
clear
B)
8.9 done
clear
C)
17.8 done
clear
D)
26.7 done
clear
View Solution play_arrow
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question_answer20)
Vapour density of a gas is 22. What is its molecular mass [AFMC 2000]
A)
33 done
clear
B)
22 done
clear
C)
44 done
clear
D)
11 done
clear
View Solution play_arrow
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question_answer21)
Equivalent weight of \[KMn{{O}_{4}}\] acting as an oxidant in acidic medium is [CPMT 1990; MP PET 1999]
A)
The same as its molecular weight done
clear
B)
Half of its molecular weight done
clear
C)
One-third of its molecular weight done
clear
D)
One-fifth of its molecular weight done
clear
View Solution play_arrow
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question_answer22)
0.16 g of dibasic acid required 25 ml of decinormal NaOH solution for complete neutralisation. The molecular weight of the acid will be [CPMT 1989]
A)
32 done
clear
B)
64 done
clear
C)
128 done
clear
D)
256 done
clear
View Solution play_arrow
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question_answer23)
To neutralise 20 ml of \[M/10\] sodium hydroxide, the volume of \[M/20\] hydrochloric acid required is [Andhra MBBS 1980]
A)
10 ml done
clear
B)
15 ml done
clear
C)
20 ml done
clear
D)
40 ml done
clear
View Solution play_arrow
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question_answer24)
Hydrochloric acid solutions A and B have concentration of 0.5 N and 0.1 N respectively. The volume of solutions A and B required to make 2 litres of 0.2 N hydrochloric are [KCET 1993]
A)
0.5 l of A + 1.5 l of B done
clear
B)
1.5 l of A + 0.5 l of B done
clear
C)
1.0 l of A + 1.0 l of B done
clear
D)
0.75 l of A + 1.25 l of B done
clear
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question_answer25)
5 ml of N HCl, 20 ml of \[N/2\,\,{{H}_{2}}S{{O}_{4}}\] and 30 ml of \[N/3\,\,HN{{O}_{3}}\] are mixed together and volume made to one litre. The normality of the resulting solution is [MNR 1991]
A)
\[N/5\] done
clear
B)
\[N/10\] done
clear
C)
\[N/20\] done
clear
D)
\[N/40\] done
clear
View Solution play_arrow
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question_answer26)
Under similar conditions of pressure and temperature, 40 ml of slightly moist hydrogen chloride gas is mixed with 20 ml of ammonia gas, the final volume of gas at the same temperature and pressure will be [CBSE PMT 1993]
A)
100 ml done
clear
B)
20 ml done
clear
C)
40 ml done
clear
D)
60 ml done
clear
View Solution play_arrow
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question_answer27)
\[KMn{{O}_{4}}\] reacts with oxalic acid according to the equation, \[2MnO_{4}^{-}+5{{C}_{2}}O_{4}^{2-}+16{{H}^{+}}\to 2M{{n}^{2+}}+10C{{O}_{2}}+8{{H}_{2}}O\], here 20 ml of 0.1 M \[KMn{{O}_{4}}\] is equivalent to [CBSE PMT 1996]
A)
20 ml of 0.5 M \[{{H}_{2}}{{C}_{2}}{{O}_{4}}\] done
clear
B)
50 ml of 0.1 M \[{{H}_{2}}{{C}_{2}}{{O}_{4}}\] done
clear
C)
50 ml of 0.5 M \[{{H}_{2}}{{C}_{2}}{{O}_{4}}\] done
clear
D)
20 ml of 0.1 M \[{{H}_{2}}{{C}_{2}}{{O}_{4}}\] done
clear
View Solution play_arrow
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question_answer28)
In order to prepare one litre normal solution of \[KMn{{O}_{4}}\], how many grams of \[KMn{{O}_{4}}\] are required if the solution is used in acidic medium for oxidation [MP PET 2002]
A)
158 g done
clear
B)
31.6 g done
clear
C)
790 g done
clear
D)
62 g done
clear
View Solution play_arrow
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question_answer29)
What is the concentration of nitrate ions if equal volumes of 0.1 M \[AgN{{O}_{3}}\] and 0.1 M NaCl are mixed together [NCERT 1981; CPMT 1983]
A)
0.1 N done
clear
B)
0.2 M done
clear
C)
0.05 M done
clear
D)
0.25 M done
clear
View Solution play_arrow
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question_answer30)
30 ml of acid solution is neutralized by 15 ml of a 0.2 N base. The strength of acid solution is [CPMT 1986]
A)
0.1 N done
clear
B)
0.15 N done
clear
C)
0.3 N done
clear
D)
0.4 N done
clear
View Solution play_arrow
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question_answer31)
A solution containing \[N{{a}_{2}}C{{O}_{3}}\] and NaOH requires 300 ml of 0.1 N HCl using phenolpthalein as an indicator. Methyl orange is then added to the above titrated solution when a further 25 ml of 0.2 N HCl is required. The amount of NaOH present in solution is \[(NaOH=40,\,N{{a}_{2}}C{{O}_{3}}=106)\] [CPMT 1992]
A)
0.6 g done
clear
B)
1.0 g done
clear
C)
1.5 g done
clear
D)
2.0 g done
clear
View Solution play_arrow
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question_answer32)
In the preceeding question, the amount of \[N{{a}_{2}}C{{O}_{3}}\] present in the solution is [CPMT 1992]
A)
2.650 g done
clear
B)
1.060 g done
clear
C)
0.530 g done
clear
D)
0.265 g done
clear
View Solution play_arrow
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question_answer33)
How many ml of 1 (M) \[{{H}_{2}}S{{O}_{4}}\] is required to neutralise 10 ml of 1 (M) NaOH solution [MP PET 1998; MNR 1982; MP PMT 1987]
A)
2.5 done
clear
B)
5.0 done
clear
C)
10.0 done
clear
D)
20.0 done
clear
View Solution play_arrow
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question_answer34)
Which of the following cannot give iodometric titrations [AIIMS 1997]
A)
\[F{{e}^{3+}}\] done
clear
B)
\[C{{u}^{2+}}\] done
clear
C)
\[P{{b}^{2+}}\] done
clear
D)
\[A{{g}^{+}}\] done
clear
View Solution play_arrow
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question_answer35)
\[KMn{{O}_{4}}\] reacts with ferrous ammonium sulphate according to the equation \[MnO_{4}^{-}+5F{{e}^{2+}}+8{{H}^{+}}\to M{{n}^{2+}}+5F{{e}^{3+}}+4{{H}_{2}}O\], here 10 ml of 0.1 M \[KMn{{O}_{4}}\] is equivalent to [CPMT 1999]
A)
20 ml of 0.1 M \[FeS{{O}_{4}}\] done
clear
B)
30 ml of 0.1 M \[FeS{{O}_{4}}\] done
clear
C)
40 ml of 0.1 M \[FeS{{O}_{4}}\] done
clear
D)
50 ml of 0.1 M \[FeS{{O}_{4}}\] done
clear
View Solution play_arrow
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question_answer36)
\[Ca{{(OH)}_{2}}+{{H}_{3}}P{{O}_{4}}\to CaHP{{O}_{4}}+2{{H}_{2}}O\] the equivalent weight of \[{{H}_{3}}P{{O}_{4}}\] in the above reaction is [Pb. PMT 2004]
A)
21 done
clear
B)
27 done
clear
C)
38 done
clear
D)
49 done
clear
View Solution play_arrow
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question_answer37)
The mass of \[BaC{{O}_{3}}\] produced when excess \[C{{O}_{2}}\] is bubbled through a solution of 0.205 mol \[Ba{{(OH)}_{2}}\] is [UPSEAT 2004]
A)
81 g done
clear
B)
40.5 g done
clear
C)
20.25 g done
clear
D)
162 g done
clear
View Solution play_arrow
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question_answer38)
The amount of water that should be added to 500 ml of 0.5 N solution of \[NaOH\]to give a concentration of 10 mg per ml is
A)
100 done
clear
B)
200 done
clear
C)
250 done
clear
D)
500 done
clear
View Solution play_arrow
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question_answer39)
Number of moles of \[KMn{{O}_{4}}\]required to oxidize one mole of \[Fe({{C}_{2}}{{O}_{4}})\]in acidic medium is [Haryana CEE 1996]
A)
0.6 done
clear
B)
0.167 done
clear
C)
0.2 done
clear
D)
0.4 done
clear
View Solution play_arrow
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question_answer40)
A hydrocarbon contains 86% carbon, 488ml of the hydrocarbon weight 1.68 g at STP. Then the hydrocarbon is an
A)
Alkane done
clear
B)
Alkene done
clear
C)
Alkyne done
clear
D)
Arene done
clear
View Solution play_arrow
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question_answer41)
The ratio of amounts of \[{{H}_{2}}S\]needed to precipitate all the metal ions from 100 ml of 1 M \[AgN{{O}_{3}}\]and 100 ml of 1 M \[CuS{{O}_{4}}\]will be
A)
1:1 done
clear
B)
1:2 done
clear
C)
2:1 done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer42)
An electric discharge is passed through a mixture containing 50 c.c. of \[{{O}_{2}}\]and 50 c.c. of \[{{H}_{2}}\]. The volume of the gases formed (i) at room temperature and (ii) at 1100C will be
A)
(i) 25 c.c. (ii) 50 c.c. done
clear
B)
(i) 50 c.c. (ii) 75 c.c. done
clear
C)
(i) 25 c.c. (ii) 75 c.c. done
clear
D)
(i) 75 c.c. (ii) 75 c.c. done
clear
View Solution play_arrow
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question_answer43)
100 ml of 0.1 N hypo decolourised iodine by the addition of x g of crystalline copper sulphate to excess of KI. The value of ?x? is (molecular wt. of \[CuS{{O}_{4}}.5{{H}_{2}}O\]is 250)
A)
5.0 g done
clear
B)
1.25 g done
clear
C)
2.5 g done
clear
D)
4 g done
clear
View Solution play_arrow
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question_answer44)
How many grams of caustic potash required to completely neutralise 12.6 gm \[HN{{O}_{3}}\]
A)
22.4 KOH done
clear
B)
1.01 KOH done
clear
C)
6.02 KOH done
clear
D)
11.2 KOH done
clear
View Solution play_arrow
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question_answer45)
If isobutane and n-butane are present in a gas, then how much oxygen should be required for complete combustion of 5 kg of this gas
A)
17.9 kg done
clear
B)
9 kg done
clear
C)
27 kg done
clear
D)
1.8 kg done
clear
View Solution play_arrow
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question_answer46)
16.8 litre gas containing \[{{H}_{2}}\] and \[{{O}_{2}}\]is formed at NTP on electrolysis of water. What should be the weight of electrolysed water
A)
5 g done
clear
B)
9 g done
clear
C)
10 g done
clear
D)
12 g done
clear
View Solution play_arrow
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question_answer47)
On electrical decomposition of 150 ml dry and pure \[{{O}_{2}}\], 10% of \[{{O}_{2}}\]gets changed to O, then the volume of gaseous mixture after reaction and volume of remaining gas left after passing in turpentine oil will be
A)
145 ml done
clear
B)
149 ml done
clear
C)
128 ml done
clear
D)
125 ml done
clear
View Solution play_arrow
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question_answer48)
What should be the weight of 50% HCl which reacts with 100 g of limestone
A)
50% pure done
clear
B)
25% pure done
clear
C)
10% pure done
clear
D)
8% pure done
clear
View Solution play_arrow
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question_answer49)
What should be the weight and moles of \[AgCl\]precipitate obtained on adding 500ml of 0.20 M \[HCl\]in 30 g of \[AgN{{O}_{3}}\]solution? (\[AgN{{O}_{3}}\]= 170)
A)
14.35 g done
clear
B)
15 g done
clear
C)
18 g done
clear
D)
19 g done
clear
View Solution play_arrow
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question_answer50)
A solution of 10 ml \[\frac{M}{10}FeS{{O}_{4}}\]was titrated with \[KMn{{O}_{4}}\]solution in acidic medium. The amount of \[KMn{{O}_{4}}\]used will be [CPMT 1984]
A)
5 ml of 0.1 M done
clear
B)
10 ml of 1.1 M done
clear
C)
10 ml of 0.5 M done
clear
D)
10 ml of 0.02 M done
clear
View Solution play_arrow
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question_answer51)
1.12 ml of a gas is produced at STP by the action of 4.12 mg of alcohol, with methyl magnesium iodide. The molecular mass of alcohol is [Roorkee 1992; IIT 1993]
A)
16.0 done
clear
B)
41.2 done
clear
C)
82.4 done
clear
D)
156.0 done
clear
View Solution play_arrow
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question_answer52)
The simplest formula of a compound containing 50% of element X (atomic mass 10) and 50% of element Y (atomic mass 20) is [Roorkee 1994]
A)
\[XY\] done
clear
B)
\[{{X}_{2}}Y\] done
clear
C)
\[X{{Y}_{3}}\] done
clear
D)
\[{{X}_{2}}{{Y}_{3}}\] done
clear
View Solution play_arrow
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question_answer53)
A compound contains atoms of three elements in A, B and C. If the oxidation number of A is +2, B is +5 and that of C is ? 2, the possible formula of the compound is [CBSE PMT 2000]
A)
\[{{A}_{3}}{{(B{{C}_{4}})}_{2}}\] done
clear
B)
\[{{A}_{3}}{{({{B}_{4}}C)}_{2}}\] done
clear
C)
\[AB{{C}_{2}}\] done
clear
D)
\[{{A}_{2}}{{(B{{C}_{3}})}_{2}}\] done
clear
View Solution play_arrow
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question_answer54)
What will be the volume of \[C{{O}_{2}}\]at NTP obtained on heating 10 grams of (90% pure) limestone [Pb. CET 2001]
A)
22.4 litre done
clear
B)
2.016 litre done
clear
C)
2.24 litre done
clear
D)
20.16 litre done
clear
View Solution play_arrow
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question_answer55)
The ratio of the molar amounts of \[{{H}_{2}}S\] needed to precipitate the metal ions from \[20mL\] each of \[1M\ Cd{{(N{{O}_{3}})}_{2}}\] and \[0.5M\ CuS{{O}_{4}}\] is [CPMT 1997]
A)
1 : 1 done
clear
B)
2 : 1 done
clear
C)
1 : 2 done
clear
D)
Indefinite done
clear
View Solution play_arrow
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question_answer56)
\[12g\] of \[Mg\](at. mass 24) will react completely with acid to give [MNR 1985]
A)
One mole of \[{{H}_{2}}\] done
clear
B)
1/2 mole of \[{{H}_{2}}\] done
clear
C)
2/3 mole of \[{{O}_{2}}\] done
clear
D)
Both 1/2 mol of \[{{H}_{2}}\] and 1/2 mol of \[{{O}_{2}}\] done
clear
View Solution play_arrow
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question_answer57)
\[1.5\] mol of \[{{O}_{2}}\] combine with \[Mg\] to form oxide \[MgO\]. The mass of \[Mg\] (at. mass 24) that has combined is [KCET 2001]
A)
\[72\ g\] done
clear
B)
\[36\ g\] done
clear
C)
\[48\ g\] done
clear
D)
\[24\ g\] done
clear
View Solution play_arrow
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question_answer58)
100 g CaCO3 reacts with 1litre 1 N HCl. On completion of reaction how much weight of \[C{{O}_{2}}\] will be obtain [Kerala CET 2005]
A)
\[5.5\ g\] done
clear
B)
\[11\ g\] done
clear
C)
\[22\ g\] done
clear
D)
\[33\ g\] done
clear
E)
\[44\ g\] done
clear
View Solution play_arrow