Chemistry Question Bank

Which of the following is not from 14 th group

Match the column I with column II and mark the appropriate choice. Column I Column II (A) Coal gas (i) CO + H2 (B) Synthesis gas (ii) CH4 (C) Producer gas (iii) H2 + CH4 + CO (D) Natural gas (iv) CO + N2

Identify X in the reaction : (steam) X 2H O XO 2H D + ¾¾® +

When excesss of carbon dioxide is passed through lime water, the milkiness first formed disappears due to

AlCl3 on hydrolysis gives:

Which one of the following is not the characteristic property of carbon ?

Graphite is soft while diamond is hard because

Moderate electrical conductivity is shown by

Catenation i.e., linking of similar atoms depends on size and electronic configuration of atoms. The tendency of catenation in Group 14 elements follows the order

There is a large number of carbon compounds due to

Maximum ability of catenation is shown by

Alumina is:

Alumina is:

When alumina is heated with carbon in nitrogen atmo- sphere, the products are:

Which of the following will be formed, if we heat an aqueous solution of AlCl3 to dryness ?

Heating an aqueous solution of aluminium chloride to dryness will give

Alumina may be converted into anhydrous aluminium chloride by:

Alumina is:

Thermite is a mixture of iron oxide and

Which of the following is correct?

Reactivity of borazole is higher than that of benzene because:

What are X and Y in the reaction ? heat 3B H 6X 3[BH (X) ] [BH ] Y 12H + - + ® ¾¾¾® +

Diborane reacts with ammonia under different conditions to give a variety of products. Which one among the following is not fomed in these conditions?

A mixture of boron trichloride and hydrogen is subjected to silent electric discharge to form ‘A’ and HCl. ‘A’ is mixed with NH3 and heated to 200oC to form ‘B’. The formula of ‘B’ is:

From B2H6, all the following can be prepared except: