1.575 gm crystalline oxalic acid |      COOHCOOH·xH2O is dissolved in water and diluted upto 250 ml. 25ml of this solution is completely neutralised with 250ml N/10 NaOH. The value of 'x' is 

1. Zero

2. 1

3. 2

4. 5

Subtopic:  Equivalent Weight |
 57%
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NEET 2023 - Target Batch - Aryan Raj Singh
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A 2 gm mixture of K2CO3 and KCl is completely reacted with 100 ml N/10 HCl. The % of K2CO3 in the mixture is (K = 39, Cl =35.5, C=12, O=16)

1. 69%

2. 34.5%

3. 50%

4. 100%

Subtopic:  Equivalent Weight |
 66%
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NEET 2023 - Target Batch - Aryan Raj Singh
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400 ml M/10 H2SO4 is mixed with 600 ml N/10 NaOH then normality and nature of solution respectively will be

1. 0.02N, basic

2. 0.02N, acidic

3. 0.046N, acidic

4. 0.142N , acidic

Subtopic:  Equivalent Weight |
 59%
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The oxidation number of sulphur in S8, S2F2 and H2S respectively are :

1. 0, +1 and -2

2. +2, +1 and -2

3. 0, +1 and +2

4. -2. +1 and -2

Subtopic:  Oxidizing & Reducing Agents |
 86%
From NCERT
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When Cl2 is converted into Cl- & ClO3- then n-factor of Clwill be:

1. 3/5

2. 5/3

3. 7/2

4. 2

Subtopic:  Equivalent Weight |
 65%
From NCERT
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MnO2 + 4HCl MnCl2+2H2O+Cl2, the equivalent wt. of HCl will be (MMol wt of HCl)

1. M

2. M/2

3. 2M

4. M/4

Subtopic:  Equivalent Weight |
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In Na2S2O3, the oxidation number of S is

1. +2

2. +4 & zero

3. +6 & -2

4. +3

Subtopic:  Oxidizing & Reducing Agents |
From NCERT
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Which acts as a reducing agent only?

1. SO2

2. HNO3

3. MnO2

4. H2S

Subtopic:  Oxidizing & Reducing Agents |
 65%
From NCERT
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MnO4-(aq) + 8H+(aq) + 5e- Mn2+(aq) + 4H2O(l);E°=1051V

Cr2O72-(aq) +14H+(aq) + 6e 2Cr3+(aq) + 7H2O(l);E°=1.38V

Fe3+(aq) + e- Fe2+(aq);E°=0.77V

Cl2(g) + 2e- 2Cl-(aq); E°= 1.40V

The incorrect statement regarding the quantitative estimation of aqueous  Fe(NO3)is -

 

1. MnO4- can be used in aqueous HCl

2. Cr2O72- can be used in aqueous HCl

3. MnO-24 can be used in aqueous H2SO4

4.  Cr2O72- can be used in aqueous H2SO4

Subtopic:  Emf & Electrode Potential |
From NCERT
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The equivalent weight of H3PO2, when it disproportionates into PH3 and H3PO3 is 

1. 66

2. 49.5

3. 33

4. 20.5

Subtopic:  Equivalent Weight |
 66%
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NEET 2023 - Target Batch - Aryan Raj Singh
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