If Avogadro number , is changed from to this would change -
1. The definition of mass in units of grams
2. The mass of one mole of carbon
3. The ratio of chemical species to each other in a balanced equation
4. The ratio of elements to each other in a compound
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe number of water molecules is maximum in
1. 18 molecules of water
2. 1.8 g of water
3. 18 g of water
4. 18 moles of water
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA mixture of gases contains H2 and O2 gases in the ratio of 1 : 4 (w/w). The molar ratio of the two gases in the mixture will be?
1. 1:4
2. 4:1
3. 16:1
4. 2:1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen 22.4 litres of H2(g) is mixed with 11.2 litres of Cl2(g), both at STP, the moles of HCl(g) formed is equal to :
1. 1 mol of HCl(g)
2. 2 mol of HCl(g)
3. 0.5 mol of HCl(g)
4. 1.5 mol of HCl(g)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1.0 g of magnesium is burnt with 0.56 g O2 in a closed vessel. Which reactant is left in excess and by how much? (At. wt. Mg = 24; O = 16)
1. Mg, 0.16 g
2. , 0.16 g
3. Mg, 0.44 g
4. , 0.28 g
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich has the maximum number of molecules among the following?
1. 64 g SO2
2. 44 g CO2
3. 48 g O3
4. 8 g H2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe number of atoms in 0.1 mole of a triatomic gas is (NA= 6.02 x 1023 mol-1)
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology