Stoichiometry and its Calculations
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307051 The composition of residual mixture will be, if \(\mathrm{30 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}}\) combines with \(\mathrm{30 \mathrm{~g}}\) of \(\mathrm{\mathrm{O}_{2}}\)

1 \(\mathrm{40 \mathrm{~g}}\) of \(\mathrm{\mathrm{MgO}+20 \mathrm{~g} \mathrm{O}_{2}}\)
2 \(\mathrm{45 \mathrm{~g}}\) of \(\mathrm{\mathrm{MgO}+15 \mathrm{~g} \mathrm{O}_{2}}\)
3 \(\mathrm{50 \mathrm{~g}}\) of \(\mathrm{\mathrm{MgO}+10 \mathrm{~g} \mathrm{O}_{2}}\)
4 \({\text{60 g MgO}}\) only
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307052 A sample of \(\mathrm{CaCO}_{3}\) and \(\mathrm{MgCO}_{3}\) weighed 2.21 g is ignited to constant weight of 1.152 g . The composition of mixture is
(Given molar mass in \(\mathrm{gmol}^{-1} \mathrm{CaCO}_{3}=100\),\(\mathrm{MgCO}_{3}=84\) )

1 \(1.023 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.187 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
2 \(1.023 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.023 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
3 \(1.187 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.187 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
4 \(1.187 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.023 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
JEE Main - 2024
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307053 Calcium carbide produces acetylene on reaction with water, ethylene can be obtained by reduction of \(\mathrm{C}_{2} \mathrm{H}_{2}\). Polythene is produced by polymerization of \(\mathrm{C}_{2} \mathrm{H}_{4}\). Calculate the theoretical yield of polythene per kilogram of \(\mathrm{CaC}_{2}\).

1 1.4375 kg
2 0.4375 kg
3 0.5312 kg
4 0.7345 kg
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307054 0.48 g of a sample of a compound containing boron and oxygen contains 0.192 g of boron and 0.288 g of oxygen. What will be the percentage composition of the compound?

1 60% and 40% B and O respectively
2 40% and 60% B and O respectively
3 30% and 70% B and O respectively
4 70% and 30% B and O respectively
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307051 The composition of residual mixture will be, if \(\mathrm{30 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}}\) combines with \(\mathrm{30 \mathrm{~g}}\) of \(\mathrm{\mathrm{O}_{2}}\)

1 \(\mathrm{40 \mathrm{~g}}\) of \(\mathrm{\mathrm{MgO}+20 \mathrm{~g} \mathrm{O}_{2}}\)
2 \(\mathrm{45 \mathrm{~g}}\) of \(\mathrm{\mathrm{MgO}+15 \mathrm{~g} \mathrm{O}_{2}}\)
3 \(\mathrm{50 \mathrm{~g}}\) of \(\mathrm{\mathrm{MgO}+10 \mathrm{~g} \mathrm{O}_{2}}\)
4 \({\text{60 g MgO}}\) only
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307052 A sample of \(\mathrm{CaCO}_{3}\) and \(\mathrm{MgCO}_{3}\) weighed 2.21 g is ignited to constant weight of 1.152 g . The composition of mixture is
(Given molar mass in \(\mathrm{gmol}^{-1} \mathrm{CaCO}_{3}=100\),\(\mathrm{MgCO}_{3}=84\) )

1 \(1.023 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.187 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
2 \(1.023 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.023 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
3 \(1.187 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.187 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
4 \(1.187 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.023 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
JEE Main - 2024
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307053 Calcium carbide produces acetylene on reaction with water, ethylene can be obtained by reduction of \(\mathrm{C}_{2} \mathrm{H}_{2}\). Polythene is produced by polymerization of \(\mathrm{C}_{2} \mathrm{H}_{4}\). Calculate the theoretical yield of polythene per kilogram of \(\mathrm{CaC}_{2}\).

1 1.4375 kg
2 0.4375 kg
3 0.5312 kg
4 0.7345 kg
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307054 0.48 g of a sample of a compound containing boron and oxygen contains 0.192 g of boron and 0.288 g of oxygen. What will be the percentage composition of the compound?

1 60% and 40% B and O respectively
2 40% and 60% B and O respectively
3 30% and 70% B and O respectively
4 70% and 30% B and O respectively
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307051 The composition of residual mixture will be, if \(\mathrm{30 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}}\) combines with \(\mathrm{30 \mathrm{~g}}\) of \(\mathrm{\mathrm{O}_{2}}\)

1 \(\mathrm{40 \mathrm{~g}}\) of \(\mathrm{\mathrm{MgO}+20 \mathrm{~g} \mathrm{O}_{2}}\)
2 \(\mathrm{45 \mathrm{~g}}\) of \(\mathrm{\mathrm{MgO}+15 \mathrm{~g} \mathrm{O}_{2}}\)
3 \(\mathrm{50 \mathrm{~g}}\) of \(\mathrm{\mathrm{MgO}+10 \mathrm{~g} \mathrm{O}_{2}}\)
4 \({\text{60 g MgO}}\) only
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307052 A sample of \(\mathrm{CaCO}_{3}\) and \(\mathrm{MgCO}_{3}\) weighed 2.21 g is ignited to constant weight of 1.152 g . The composition of mixture is
(Given molar mass in \(\mathrm{gmol}^{-1} \mathrm{CaCO}_{3}=100\),\(\mathrm{MgCO}_{3}=84\) )

1 \(1.023 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.187 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
2 \(1.023 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.023 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
3 \(1.187 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.187 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
4 \(1.187 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.023 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
JEE Main - 2024
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307053 Calcium carbide produces acetylene on reaction with water, ethylene can be obtained by reduction of \(\mathrm{C}_{2} \mathrm{H}_{2}\). Polythene is produced by polymerization of \(\mathrm{C}_{2} \mathrm{H}_{4}\). Calculate the theoretical yield of polythene per kilogram of \(\mathrm{CaC}_{2}\).

1 1.4375 kg
2 0.4375 kg
3 0.5312 kg
4 0.7345 kg
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307054 0.48 g of a sample of a compound containing boron and oxygen contains 0.192 g of boron and 0.288 g of oxygen. What will be the percentage composition of the compound?

1 60% and 40% B and O respectively
2 40% and 60% B and O respectively
3 30% and 70% B and O respectively
4 70% and 30% B and O respectively
NEET DIGITAL LIBRARY
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307051 The composition of residual mixture will be, if \(\mathrm{30 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}}\) combines with \(\mathrm{30 \mathrm{~g}}\) of \(\mathrm{\mathrm{O}_{2}}\)

1 \(\mathrm{40 \mathrm{~g}}\) of \(\mathrm{\mathrm{MgO}+20 \mathrm{~g} \mathrm{O}_{2}}\)
2 \(\mathrm{45 \mathrm{~g}}\) of \(\mathrm{\mathrm{MgO}+15 \mathrm{~g} \mathrm{O}_{2}}\)
3 \(\mathrm{50 \mathrm{~g}}\) of \(\mathrm{\mathrm{MgO}+10 \mathrm{~g} \mathrm{O}_{2}}\)
4 \({\text{60 g MgO}}\) only
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307052 A sample of \(\mathrm{CaCO}_{3}\) and \(\mathrm{MgCO}_{3}\) weighed 2.21 g is ignited to constant weight of 1.152 g . The composition of mixture is
(Given molar mass in \(\mathrm{gmol}^{-1} \mathrm{CaCO}_{3}=100\),\(\mathrm{MgCO}_{3}=84\) )

1 \(1.023 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.187 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
2 \(1.023 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.023 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
3 \(1.187 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.187 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
4 \(1.187 \mathrm{~g} \,\mathrm{CaCO}_{3}+1.023 \mathrm{~g} \,\mathrm{MgCO}_{3}\)
JEE Main - 2024
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307053 Calcium carbide produces acetylene on reaction with water, ethylene can be obtained by reduction of \(\mathrm{C}_{2} \mathrm{H}_{2}\). Polythene is produced by polymerization of \(\mathrm{C}_{2} \mathrm{H}_{4}\). Calculate the theoretical yield of polythene per kilogram of \(\mathrm{CaC}_{2}\).

1 1.4375 kg
2 0.4375 kg
3 0.5312 kg
4 0.7345 kg
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

307054 0.48 g of a sample of a compound containing boron and oxygen contains 0.192 g of boron and 0.288 g of oxygen. What will be the percentage composition of the compound?

1 60% and 40% B and O respectively
2 40% and 60% B and O respectively
3 30% and 70% B and O respectively
4 70% and 30% B and O respectively
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