Chemistry Question Bank

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)

What is structure of H2O2? (MP PMT 2010) (a)

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

Match the following (CPMT 2008) Column I Column II (A) 10 vol H2O2

If 11.1 mg of CaCl2 and 12 mg of MgSO4 are present in 2 L of water, what is its hardness (in gram CaCO3 / ppm)? (EAMCET 2008)

Which one of the following processes will produce hard water? (RPMT 2008)