Two students performed the same experiment separately, and each of them recorded two readings of mass, which are given below. The correct reading of mass is 3.0 g. On the basis of the given data, mark the correct option out of the following statements.

A reading on Fahrenheit scale is $200°\mathrm{F}$. The same reading on celsius scale will be :
1. 40°C
2. 94°C
3. 93°C
4. 30°C

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

1. 1.5 M

2. 1.66 M

3. 0.017 M

4. 1.59 M

2. 46 g Na

3. 0.40 g Ca

4. 12 g He

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

The molality of a solution containing 18.25 g of HCl gas in 500 g of water is -

1. $12.044\times {10}^{20}$ molecules

2. $6.022\times {10}^{23}$ molecules

3. $1\times {10}^{23}$ molecules

4. $12.044\times {10}^{23}$ molecules

The mass percent of carbon in carbon dioxide is: 

The empirical formula and molecular mass of a compound are ${\mathrm{CH}}_2\mathrm{O}$ and 180 g, respectively. The molecular formula of the compound is:
1. C₉H₁₈O₉
2. CH₂O
3. C₆H₁₂O₆
4. C₂H₄O₂