- 1(current)
Q. No.
Subtopic: Introduction |
79%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following statements is incorrect?
| 1. | In a homogeneous mixture, the composition is uniform. |
| 2. | Compounds are formed when atoms of different elements combine together in any ratio. |
| 3. | Atoms of the same element have identical atomic mass and properties. |
| 4. | In a heterogeneous mixture, the composition is not uniform. |
Subtopic: Introduction |
77%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Using the rules for significant figures, the correct answer for the expression \(\frac{0.02858 \times 0.112}{0.5702}\) will be :
1. \(0.005613\)
2. \(0.00561\)
3. \(0.0056\)
4. \(0.006\)
1. \(0.005613\)
2. \(0.00561\)
3. \(0.0056\)
4. \(0.006\)
Subtopic: Introduction |
78%
Level 2: 60%+
JEE
Please attempt this question first.
Hints
Please attempt this question first.
Subtopic: Introduction |
86%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Ferrous sulphate heptahydrate is used to fortify foods with iron. The amount (in grams) of the salt required to achieve 10 ppm of iron in 100 kg of wheat is:
(Atomic weight :Fe = 55.85; S 32.00; O ; 16.00)
1. 3 gram
2. 12 gram
3. 1 gram
4. 4.97 gram
(Atomic weight :Fe = 55.85; S 32.00; O ; 16.00)
1. 3 gram
2. 12 gram
3. 1 gram
4. 4.97 gram
Subtopic: Introduction |
Level 3: 35%-60%
JEE
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
© 2025 GoodEd Technologies Pvt. Ltd.