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Subtopic: Introduction |
From NCERT
JEE
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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
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 |
JEE
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Hints
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 |
From NCERT
JEE
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Hints
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Subtopic: Introduction |
From NCERT
JEE
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Hints
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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 |
From NCERT
JEE
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Hints
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- 1(current)
Q. No.
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