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Class XI Chemistry Hydrogen 1
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Question 1
Free hydrogen is found in -
Question 2
Metals like Pt and Pd can take up large volume of hydrogen under special conditions. Hydrogen thus retained by the metal is called-
Question 3
The reaction H2S + H2O2→ S + 2H2O manifests -
Question 4
The decomposition of H2O2 can be slowed down by the addition of small amount of phosphoric acid which act as
Question 5
1 g of H2 gas at STP is expanded so that volume is doubled. Hence, work done is :
Question 6
In context with the industrial preparation of hydrogen from water gas (CO + H2), which of the following is the correct statement?
Question 7
From the following statements regarding H2O2 choose the incorrect statement:
Question 8
The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb, 40 ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of :
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Dec 12NEET & AIIMS
