19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Anodised aluminium is :
Boron compounds behave as Lewis acids, because of their (AIPMT 1996)
In graphite, electrons are
In which of the following the inert pair effect is most prominent ?
Which of the following types of forces bind together the carbon atoms in diamond? (AIPMT 1992)
A type of zeolite used to convert alcohols directly into gasoline is
Carbon and silicon belong to (IV) group. The maximum coordination number of carbon in commonly occurring compounds is 4, whereas that of silicon is 6. This is due to (AIPMT 1994)
Which of the following does not show electrical conduction? (AIPMT 1999)
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 ?
Silicon is an important constituent of
Identify the incorrect statement.
Which of the following is not true about structure of diamond and graphite ?
Glass and cement are two important examples of
In graphite, the layers of carbon atoms are held by
Buckminsterfullerence is
What is the number of free electrons present on each carbon atom in graphite ?
The purest form of coal is
Which of the following is the correct statement about silicones ?
Percentage of lead in lead pencil is (AIPMT 1999)
When excesss of carbon dioxide is passed through lime water, the milkiness first formed disappears due to
Which one of the following is not the characteristic property of carbon ?
Identify X in the reaction : (steam) X 2H O XO 2H D + ¾¾® +
There is a large number of carbon compounds due to
Moderate electrical conductivity is shown by