A reading on Fahrenheit scale is 200°F. The same reading on celsius scale will be :

1. 40°C 2. 94°C
3. 93°C 4. 30°C

Subtopic:  Introduction |
 67%
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The molarity of a solution containing 5.85 g of NaCl(s) per 500 mL of solution is -

1. 4 mol L-1

2. 20 mol L-1

3. 0.2 mol L-1

4. 2 mol L-1

Subtopic:  Concentration Based Problem |
 89%
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If 500 mL of a 5 M solution is diluted to 1500 mL, the molarity of the resultant solution is: 

1. 1.5 M

2. 1.66 M

3. 0.017 M

4. 1.59 M

Subtopic:  Concentration Based Problem |
 82%
From NCERT
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Mark the species among the following that contains the highest number of atoms.

1. 4 g He

2. 46 g Na

3. 0.40 g Ca

4. 12 g He

Subtopic:  Moles, Atoms & Electrons |
 84%
From NCERT
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If the concentration of glucose  (C6H12O6)  in the blood is 0.9 g L-1, then the molarity of glucose in the blood is 
1. 5 M
2. 50 M
3. 0.005 M
4. 0.05 M

Subtopic:  Concentration Based Problem |
 73%
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The molality of a solution containing 18.25 g of HCl gas in 500 g of water is -

1. 0.1 m 2. 1 M
3. 0.5 m 4. 1 m
Subtopic:  Concentration Based Problem |
 69%
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The number of molecules of H2SO4 present in 100 mL of 0.02 M H2SO4 solution is: 

1. 12.044×1020 molecules

2. 6.022×1023 molecules

3. 1×1023 molecules

4. 12.044×1023 molecules

Subtopic:  Concentration Based Problem |
 79%
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The mass percent of carbon in carbon dioxide is : 

1. 0.034% 2. 27.27%
3. 3.4% 4. 28.7%
Subtopic:  Concentration Based Problem |
 77%
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The empirical formula and molecular mass of a compound are CH2O and 180 g, respectively. The molecular formula of the compound is -

1.  C9H18O9 2.  CH2O
3.  C6H12O6 4.  C2H4O2
Subtopic:  Empirical & Molecular Formula |
 90%
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If the density of the solution is 3.12 g ml-1, then what will be the mass of the 1.5 ml solution in two significant figures?

1. \(4.4~\mathrm{g}\) 2. \(4680 \times 10^{3} ~\mathrm{g}\)
3. \(4.7~\mathrm{g}\) 4. \(46.80~\mathrm{g}\)
Subtopic:  Introduction |
 78%
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