Chemistry Question Bank

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

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

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 - …

Which of the following is not from 14 th group

Which of the following ions is the most stable ?

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

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

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 …

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

Maximum ability of catenation is shown by

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 ?

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

There is a large number of carbon compounds due to

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

Which of the following acids cannot be stored in glass ?

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

The type of hybridisation of boron in diborane is (AIPMT 1999)

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

Moderate electrical conductivity is shown by

Which one of the following oxides is neutral ?

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

Complex formation is more likely to be possible in _____

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

Sindoor is represented by

When excess of NaOH solution is added in potash alum, the product is: