JEE Main 2022 (Online) 24th June Evening Shift | Some Basic Concepts of Chemistry Question 95 | Chemistry

120 g of an organic compound that contains only carbon and hydrogen gives 330 g of CO₂ and 270 g of water on complete combustion. The percentage of carbon and hydrogen, respectively are

25 and 75

40 and 60

60 and 40

75 and 25

JEE Main 2022 (Online) 24th June Morning Shift

MCQ (Single Correct Answer)

-1

If a rocket runs on a fuel (C₁₅H₃₀) and liquid oxygen, the weight of oxygen required and CO₂ released for every litre of fuel respectively are :

(Given : density of the fuel is 0.756 g/mL)

1188 g and 1296 g

2376 g and 2592 g

2592 g and 2376 g

3429 g and 3142 g

JEE Main 2021 (Online) 16th March Evening Shift

MCQ (Single Correct Answer)

-1

The exact volumes of 1 M NaOH solution required to neutralise 50 mL of 1 M H₃PO₃ solution and 100 mL of 2 M H₃PO₂ solution, respectively, are :

100 mL and 50 mL

100 mL and 200 mL

100 mL and 100 mL

50 mL and 50 mL

JEE Main 2021 (Online) 25th February Morning Shift

MCQ (Single Correct Answer)

-1

Complete combustion of 1.80 g of an oxygen containing compound (C_xH_yO_z) gave 2.64 g of CO₂ and 1.08 g of H₂O. The percentage of oxygen in the organic compound is :

51.63

50.33

63.53

53.33

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