Chemistry QuestionsHydrogen Questions for CBSE Class 11th

Hydrogen Questions for CBSE Class 11th

Which is false statement regarding ice?

E c e l l Θ for some half cell reactions are given below. On the basis of these mark the correct answer. (1) H + ( a q ) + e – 1 2 H 2 ( g ) ; E c e l l Θ = 0 . 00 V ( ii) 2 H 2 O ( l ) O 2 ( g ) + 4 H + ( a q ) + 4 e – ; E c e l l Θ = 1 . 23 V (iii) 2 S O 4 2 – ( a q ) S 2 O 8 2 – ( a q ) + 2 e – ; E cell Θ = 1 . 96 V

The compound which gives H 2 O 2 on treatment with dilute acid is/are:

Which of the following method can be used to separate hydrogen gas from nitrogen gas?

An acidified solution of potassium chromate was layered with an equal volume of amyl alcohol. When it was shaken after the addition of 1 mL of 3% H 2 O 2 , a blue alcohol layer was obtained. The blue color is due to the formation of a chromium (VI) compound ‘X’ . What is the number of oxygen atoms bonded to chromium through only single bonds in a molecule of X?

Peroxo bond (-O-O) is present in

This section contains questions each with two columns I and II. Match the items given in column I with that in the column II. COLUMN – I COLUMN – II a. mixed oxide i. Metallic hydride b. Non-stoichiometric compound ii. Magnetite c. Covalent hydride iii. Hydrolith d. Salt-like hydride iv. Hydrogen compounds of non-metals

Electrolysis of aqueous NaCI and NaH will liberate

In which of the following reaction H 2 O 2 acts as a reducing agent? (P) H 2 O 2 + 2H + + 2 e − 2 H 2 O (Q) H 2 O 2 − 2 e − O 2 + 2H + (R) H 2 O 2 + 2 e − 2OH − (S) H 2 O 2 + 2OH − − 2 e − O 2 + 2 H 2 O

x g of H 2 O 2 requires 100 mL of M/5 KMnO 4 in a titration in a solution having pOH = 1.0 Which of the following is/are correct?

The volume strength of perhydrol solution is

Which of the following statements is/are correct about 6.8% strength of H 2 O 2 .

The reagent(s) used for softening the temporary hardness of water is (are)

10 mL of H 2 O 2 solution (volume strength – x) requires 10 mL of N 0 . 56 MnO 4 ⊝ solution in acidic medium. Hence x is

10 ml of H 2 O 2 solution on heating liberates 224 ml dry O 2 gas at STP. Normality of solution is —————————

3.4 g sample of H 2 O, solution containing x% H 2 O 2 by weight requires x mL of KMnO 4 solution for complete oxidation under acidic condition. The normality of KMnO 4 solution is

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