Chemistry Question Bank

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

Which of the following acids cannot be stored in glass ?

In SiO , - the tetrahedral molecule, two oxygen atoms are shared in

Which of the following is not from 14 th group

Which one of the following anions is present in the chain structure silicates ? (a) Si O - (b) n (Si O ) - (c) n (SiO ) - (d) SiO - Ans. (c) Sol. There are two general formula of anions of chain silicates are n SiO - …

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

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

The most stable form of carbon at high temperature is X. The C – C bond length in diamond is Y while C – C bond length in graphite is Z. What are X, Y and Z respectively ?

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 …

Maximum ability of catenation is shown by

The members of group 14 form tetrahalides of the type MX4. Which of the following halides cannot be readily hydrolysed by water ?

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

There is a large number of carbon compounds due to

In graphite, C atom is in .......... state.

CO₂ is not a poisonous gas but there is increase in concentration of CO₂ in the atmosphere due to burning of fossil fuels and decompostion of limestone. The increase in concentration of CO₂ may lead to

Identify the wrong example from the following for the group 14 elements.

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

Carbon shows a maximum covalency of four whereas other members can expand their covalence due to

Moderate electrical conductivity is shown by

All members of group 14 when heated in oxygen form oxides. Which of the following is the correct trend of oxides ?

Which one of the following oxides is neutral ?

Aluminium vessels should not be washed with materials containing washing soda since :

An element of group 14 forms two oxides one of which is highly poisonous and neutral. Other oxide can be easily liquefied and compressed to give a solid which is used as a refrigerant under the name of drikold. The el…

Which of the following oxides can act as a reducing agent ?

Complex formation is more likely to be possible in _____