Chemistry Question Bank

The ionization of hydrogen atom would give rise to (AIPMT 1990)

Hydrogen peroxide molecules are (AIPMT 1991)

At its melting point, ice is lighter than water because (AIPMT 1992)

Water gas is produced by (AIPMT 1992)

One would expect proton to have very large (AIPMT 1993)

The O – O – H bond angle in H2O2(g) is about (AIPMT 1994)

Which of the following groups of ions makes the water hard? (AIPMT 1994)

The volume strength of 1.5 N H2O2 solution is (AIPMT 1997)

Which one of the following pairs of substances on reaction will not evolve H2 gas? (AIPMT 1998)

The hardness of water is estimated by (Manipal 2004)

When CO2 is bubbled through a solution of barium peroxide in water (AFMC 2005)

How many neutrons are present in tritium nucleus? (RPMT 2006)

How many ‘mL’ of perhydrol is required to produce sufficient oxygen which can be used to completely convert 2 L of SO2 gas? (BITSAT 2007)

Hardness of water is due to the presence of salts of (AMU 2007)

The formula of Calgon, used for water softening is (EAMCET 2007)

Radioactive isotope of hydrogen is (RPMT 2007)

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

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)

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

Perhydrol (B) 20 vol H2O2

5.358 N (C) 30 vol H2O2

1.785 M (D) 100 vol H2O2

3.03% w/V The correct match is

Which of the following is incorrect? (BHU 2008)

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