A gas sample with an initial volume of 3.25 dm3 is heated and allowed to…
A gas sample with an initial volume of 3.25 dm3 is heated and allowed to expand to 9.75…
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Two cylinders A and B each contains 30 cm3 of oxygen and nitrogen respectively at…
Two cylinders A and B each contains 30 cm3 of oxygen and nitrogen respectively at the same temperature…
The number of hydrogen ions in 4.9 g of tetraoxosulphate (IV) acid is? (S =…
The number of hydrogen ions in 4.9 g of tetraoxosulphate (IV) acid is? (S = 32, O =16,…
What volume of oxygen will remain after reacting 8cm3 of hydrogen with 20cm3 of oxygen?
What volume of oxygen will remain after reacting 8cm3 of hydrogen with 20cm3 of oxygen? A. 10 cm3…
Which of the following reagents will confirm the presence of unsaturation in a compound?
Which of the following reagents will confirm the presence of unsaturation in a compound? A. Fehling’s solution B.…
Chromatography is used to separate components of mixtures which differ in their rates of?
Chromatography is used to separate components of mixtures which differ in their rates of? A. diffusion B. migration…
Which of the following is a example of a chemical change?
Which of the following is a example of a chemical change? A. Dissoultion of salt in water B.…
The general formula of alkanoates is?
The general formula of alkanoates is? A. RCHO B. R2CO C. RCOOH D. RCOOR Correct Answer: Option D…
One mole of a hydrocarbon contains 48 g of carbon. If it vapour density is…
One mole of a hydrocarbon contains 48 g of carbon. If it vapour density is 28, the hydrocarbon…
Which of the following compounds is NOT an isomers of 2,2 dimethylbutane?
Which of the following compounds is NOT an isomers of 2,2 dimethylbutane? A. 2-methylbutane B. 3-methylpentane C. 2,3-dimethylbutane…