1
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1

$$1.0 \mathrm{~g}$$ of $$\mathrm{H}_2$$ has same number of molecules as in:

A
$$14 \mathrm{~g}$$ of $$\mathrm{N}_2$$
B
$$18 \mathrm{~g}$$ of $$\mathrm{H}_2 \mathrm{O}$$
C
$$16 \mathrm{~g}$$ of $$\mathrm{CO}$$
D
$$28 \mathrm{~g}$$ of $$\mathrm{N}_2$$
2
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1

On complete combustion, 0.3 g of an organic compound gave 0.2 g of CO$$_2$$ and 0.1 g of H$$_2$$O. The percentage composition of carbon and hydrogen in the compound, respectively is:

A
4.07% and 15.02%
B
18.18% and 3.70%
C
15.02% and 4.07%
D
3.70% and 18.18%
3
NEET 2024
MCQ (Single Correct Answer)
+4
-1

1 gram of sodium hydroxide was treated with $$25 \mathrm{~mL}$$ of $$0.75 \mathrm{~M} \mathrm{~HCl}$$ solution, the mass of sodium hydroxide left unreacted is equal to

A
750 mg
B
250 mg
C
Zero mg
D
200 mg
4
NEET 2024
MCQ (Single Correct Answer)
+4
-1

The highest number of helium atoms is in

A
$$4 \mathrm{~mol}$$ of helium
B
$$\mathrm{4 u}$$ of helium
C
$$4 \mathrm{~g}$$ of helium
D
$$2.271098 \mathrm{~L}$$ of helium at STP
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