- 1(current)
Q. No.Subtopic: Introduction |
88%
Level 1: 80%+
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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 |
80%
Level 1: 80%+
JEE
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Subtopic: Introduction |
79%
Level 2: 60%+
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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 |
78%
Level 2: 60%+
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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
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- 1(current)
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