- 1(current)
Q. No.A compound X contains 32% of A, 20% of B and remaining percentage of C. Then, the empirical formula of X is :
(Given atomic mass of A = 64; B = 40; C = 32u)
1. ABC3
2. AB2C2
3. ABC4
4. A2BC2
(Given atomic mass of A = 64; B = 40; C = 32u)
1. ABC3
2. AB2C2
3. ABC4
4. A2BC2
Subtopic: Â Empirical & Molecular Formula |
 77%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
4.74 g of an inorganic compound contains 0.39g of K, 0.27 g Al, 1.92 g of \(\mathrm{SO_4}\) radicals and 2.16 g of water. If molar mass of the compound is \(948 \mathrm{~g} \mathrm{~mol}^{-1},\) the molecular formula of the inorganic compound is:
| 1. | \(\mathrm{KAl}\left(\mathrm{SO}_4\right)_2 \cdot 12 \mathrm{H}_2 \mathrm{O}\) |
| 2. | \(\mathrm{K}_2 \mathrm{Al}_2\left(\mathrm{SO}_4\right)_6 \cdot 12 \mathrm{H}_2 \mathrm{O}\) |
| 3. | \(\mathrm{K}_2 \mathrm{SO}_4 \cdot \mathrm{Al}_2\left(\mathrm{SO}_4\right)_3 \cdot24 \mathrm{H}_2 \mathrm{O}\) |
| 4. | \(\mathrm{K}_2 \mathrm{SO}_6 \cdot \mathrm{Al}_2\left(\mathrm{SO}_4\right)_3 \cdot12 \mathrm{H}_2 \mathrm{O}\) |
Subtopic: Â Empirical & Molecular Formula |
 56%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
Molar mass of a compound \(\text{(X)}\) whose \(2.6 \mathrm{~mol}\) weighs \(312 \mathrm{~g}\) is:
1. \(312 \mathrm{~g} \mathrm{~mol}^{-1}\)
2. \(120 \mathrm{~g} \mathrm{~mol}^{-1}\)
3. \(60 \mathrm{~g} \mathrm{~mol}^{-1}\)
4. \(811.2 \mathrm{~g} \mathrm{~mol}^{-1}\)
1. \(312 \mathrm{~g} \mathrm{~mol}^{-1}\)
2. \(120 \mathrm{~g} \mathrm{~mol}^{-1}\)
3. \(60 \mathrm{~g} \mathrm{~mol}^{-1}\)
4. \(811.2 \mathrm{~g} \mathrm{~mol}^{-1}\)
Subtopic: Â Empirical & Molecular Formula |
 84%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
An organic compound contains 80 % (by wt.) carbon and the remaining percentage of hydrogen. The empirical formula of this compound is:
[Atomic wt. of C is 12, H is 1]
| 1. | CH3 | 2. | CH4 |
| 3. | CH | 4. | CH2 |
Subtopic: Â Empirical & Molecular Formula |
 72%
From NCERT
NEET - 2021
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
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: Â Empirical & Molecular Formula |
 72%
From NCERT
AIPMT - 2002
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
A compound contains C, H, and O. If C = 40% and H = 6.67% and rest is oxygen, then the empirical formula of the compound will be:
1.
2.
3.
4. CHO
Subtopic: Â Empirical & Molecular Formula |
 82%
From NCERT
AIPMT - 1999
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Percentage of C, H & N of a compound is given as follows:
C=40%, H=13.33%, N=46.67%
The empirical formula of the compound will be:
1.
2.
3.
4.
Subtopic: Â Empirical & Molecular Formula |
 76%
From NCERT
AIPMT - 1998
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
- 1(current)
Q. No.
© 2024 GoodEd Technologies Pvt. Ltd.