||MCQS for JEE and AIPMT || HOME
TOPIC:: CARBON FAMILY: PAGE#9
CLICK ON THE CORRECT OPTION,
TO GET SOLUTION, CLICK ON SOLUTION

Q33) When a mixture of air and steam is passed over red hot coke, the outgoing gas is .. [ CPMT 1990]




SOLUTION

2H2O + O2 + 2C → 2H + 2CO2
Thus water gas is formed
Answer: (b)


Q34) A solid element ( Symbol Y) conducts electricity and form two chlorides YCln ( a colorless volatile liquid) and YCln-2 ( a colorless solid). To which one of the following groups of the periodic table does Y belong? [ Pb CET 1995]




SOLUTION


Answer: (b)


Q35) Which of the following is most dense? [ CPMT 1996]



SOLUTION

Density increases with increase in atomic number
Answer:(d)



Q36) Carborundum is obtained when silica is heated at high temperature with .. [ IIT 1982]



SOLUTION

SiO2 + 3C → SiC + 2CO SiC is carborundum
Answer: (a)


logo
All contents ©Copyright 2013 www.gneet.com
Site Design © 2013 All Rights Reserved Gore Coaching Classes