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MBD PUBLICATION-SOME P-BLOCK ELEMENTS-QUESTION BANK
- Explain why diamond is hard while graphite is soft.
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- Mention the hybrid state of carbon in diamond and graphite.
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- What is allotropy ?
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- Why graphite is used as lubricant ?
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- Explain allotropes. Name two crystalline allotropes of carbon.
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- Explain why diamond is a bad conductor while graphite is a good conduc...
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- Hydrolysis of CCl4 is not possible but SiCl4 is easily hydrolysed.
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- Give one reaction in which CO2 behaves as an oxidising agent. Give equ...
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- What happens when CO2 is passed over red hot coke ? Give equation.
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- Justify the position of carbon and lead in the periodic table on the b...
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- Why is solid CO2 is called dry ice ?
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- BF4 acts as acid according to :
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- Which of the following does not involve a catalyst ?
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- Reactivity of borazole is greater than that of benzene because.
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- AlCl3 on hydrolysis gives :
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- Which is used as control rods in nuclear reactors ?
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- Hydrogen gas can be produced by the reaction of aluminium with a conce...
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- Which species does not exist ?
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- Which member of group 13 is liquid at 30^@C ?
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- Which of the following is most abundant in the earth crust ?
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