Chemistry Question Bank

In which of the following reactions, H2O2 acts as a reducing agent? (EAMCET 2014) (a) H HOCl H O H O Cl O -> (b) OH Mn H O Mn 2OH -> (c) OH 2Fe H O 2Fe 2OH -> (d) H PbS s 4H O aq PbSO s 4H O l ->

30 volume hydrogen peroxide means (UK PMT 2014)

A commercial sample of H2O2 marked as 100 volume hydrogen peroxide, it means that (Manipal 2014)

The volume of oxygen evolved at STP by decomposition of 0.68 g ‘20 volume’ hydrogen peroxide solution is (MHT CET 2014)

Role of hydrogen peroxide in the below reactions is respectively (CBSE AIPMT 2014) I. H O O H O 2O -> II. H O Ag O 2Ag H O O ->

Which of the following is electron-deficient? (NEET 2013)

The normality of 20 volume hydrogen peroxide solution is (AMU 2012)

Then zeolite is treated with hard water, the sodium ions are exchanged with (AMU 2012)

Hydrogen is prepared from H2O by adding (DUMET 2011)

Permanent hardness of water is due to the presence of (Kerala CEE 2011)

What is heavy water? (Haryana PMT 2010) (a) H O (b) H O

Hydrogen sulphide is acidic while water is neutral. The reason is (RPMT 2010)

Para and ortho hydrogen differ in (RPMT 2010)

Which of the following is responsible for the permanent hardness of water? (CPMT 2010)

Permanent hardness of water can be removed by adding (AFMC 2010)

The degree of hardness of water is usually expressed in terms of (AMU 2010)

Some statements about heavy water are given below. (i) Heavy water is used as moderator in nuclear reactors. (ii) Heavy water is more associated than ordinary water. (iii) Heavy water is more effective solvent than or…

Semi-water gas is a mixture of (UP CPMT 2010) (a) CO H (b) CO N (c) CO H N (d) H CH

Which one of the following statements is incorrect with regard to ortho and para dihydrogen? (Kerala CEE 2009)

Which one of the following is non-reducing? (J&K CET 2009)

Which of the following is incorrect? (BHU 2008)

3.03% w/V The correct match is

1.785 M (D) 100 vol H2O2

5.358 N (C) 30 vol H2O2

Perhydrol (B) 20 vol H2O2