Chemistry Question Bank

Which of the following is not attacked by hot sodium hydroxide solution? (Manipal 2010)

Graphite is a good conductor of electricity. Its electrical conductivity is due to the fact that (CPMT 2010)

Chemical formula of phosgene is (AFMC 2010)

Inorganic benzene is (PMT 2010)

Borax is used as a cleansing agent because on dissolving in water, it gives (RPMT 2010)

BF3 is (RPMT 2010)

The strongest Lewis acid among boron halides is (RPMT 2010)

The tendency of BF3, BCl3 and BBr3 to behave as Lewis acid decreases in the sequence (AIPMT 2010)

Silica is soluble in (Haryana PMT 2009)

The main reason that SiCl4 is easily hydrolyzed as compared to CCl4 is that (Kerala CEE 2009)

Darkening of surface painted with white lead is due to (CPMT 2009)

Which amont the following is not a borane? (AMU 2009)

The lead of the lead pencils melts at (AIIMS 2009) p-BLOCK (Group 13 - 14)

The stability of +1 oxidation state increases in the sequence (AIPMT 2009)

Which of the following statements about H3BO3 is not correct? (AIPMT 1994)

Which of the following types of forces bind together the carbon atoms in diamond? (AIPMT 1992)

The stability of dihalides of Si, Ge, Sn and Pb increases steadily in the sequence

The most commonly used reducing agent is

Which of the following halides is least stable and has doubtful existence ?

In which of the following the inert pair effect is most prominent ?

Which of the following is not true about structure of carbon dioxide ?

Which is not a method of preparing carbon monoxide on a commercial scale ? (a) 473 1273 K (s) (g) (g) 2(g) C H O CO H - + ¾¾¾¾¾® + (b) 1273 K (s) 2(g) 2(g) (g) 2(g) 2C O 4N 2CO 4N + + ¾¾¾® + (c) (g) (s) 2(g) 2C O 2CO …

Match the column I with column II and mark the appropriate choice. Column I Column II

Which of the following is not a use of graphite ?

Which of the following is not true about structure of diamond and graphite ?