# In the Haber process, 30 litres of dihydrogen and 30 litres of dinitrogen were taken for the reaction which yielded only 50% of the expected product. What will be the composition of a gaseous mixture under the above condition in the end: 1. 20 litres of ammonia, 20 litres of nitrogen, 20 litres of hydrogen 2. 10 litres of ammonia, 25 litres nitrogen, 15 litres of hydrogen 3. 20 litres of ammonia, 10 litres of nitrogen, 30 litres of hydrogen 4. 20 litres of ammonia, 25 litres of nitrogen, 15 litres of hydrogen

Subtopic:  Limiting Reagent |
66%
From NCERT
AIPMT - 2003
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The specific volume of cylindrical virus particle is $6.02$ $×$ ${10}^{-2}$ $cc/g\mathrm{m w}$hose radius and length are 7 Å & 10Å respectively. If ${N}_{A}$ $=$ $6.023$ $×{10}^{23}$$$\text{mol}^{-1}$$, find the molecular weight.

1. $$15.4 \mathrm{~kg} / \mathrm{mol}$$
2. $$1.54 \times 10^4 \mathrm{~kg} / \mathrm{mol}$$
3. $$3.08 \times 10^4 \mathrm{~kg} / \mathrm{mol}$$
4. $$3.08 \times 10^3 \mathrm{~kg} / \mathrm{mol}$$

Subtopic:  Moles, Atoms & Electrons |
From NCERT
AIPMT - 2001
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The percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (at. wt = 78.4) then the minimum molecular weight of peroxidase anhydrous enzymes is:

1. $1.568$ $×$ ${10}^{4}$

2. $1.568$ $×$ ${10}^{3}$

3. 15.68

4. $2.136$ $×$ ${10}^{4}$

Subtopic:  Equation Based Problem |
69%
From NCERT
AIPMT - 2001
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Find the molarity of liquid HCl if the density of liquid HCl is 1.17 g/cc.

 1 36.5 2 18.25 3 32.05 4 42.1
Subtopic:  Concentration Based Problem |
67%
From NCERT
AIPMT - 2001
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The percentages of C, H, and N in an organic compound are 40%, 13.3%, and 46.7% respectively.
The empirical formula of the compound is:

 1 C3H13N3 2 CH2N 3 CH4N 4 CH6N
Subtopic:  Empirical & Molecular Formula |
72%
From NCERT
AIPMT - 2002
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Which among the following has the maximum number of molecules?

1. 7 gm N2

2. 2 gm H2

3. 16 gm NO2

4. 16 gm O2

Subtopic:  Moles, Atoms & Electrons |
86%
From NCERT
AIPMT - 2002
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1 M, 2.5 litre NaOH solution is mixed with another 0.5 M and 3 litre NaOH solution.
The molarity of the resultant solution is:

 1 0.80 M 2 1.0 M 3 0.73 M 4 0.50 M
Subtopic:  Concentration Based Problem |
74%
From NCERT
AIPMT - 2002
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The volume of CO2 obtained by the complete decomposition of 9.85 grams of BaCO3 is:

1. 2.24 lit.

2. 1.12 lit.

3. 0.84 lit.

4. 0.56 lit

Subtopic:  Equation Based Problem |
69%
From NCERT
AIPMT - 2000
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The incorrect option for mole fraction(x) is:

1.  x < 1
2.  – 2 ≤ x ≤ 2
3.  0 ≤ x ≤ 1
4.  Always non-negative

Subtopic:  Concentration Based Problem |
64%
From NCERT
AIPMT - 1999
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The maximum number of molecules is present in:

 1 5L of N2 gas at STP 2 0.5 g of H2 gas 3 10g of O2 gas 4 15 L of H2 gas at STP
Subtopic:  Moles, Atoms & Electrons |
69%
From NCERT
AIPMT - 2004
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