A chalcogen combines directly with hydrogen with great difficulty to f – InterviewSolution

InterviewSolution

1.	A chalcogen combines directly with hydrogen with great difficulty to form a hydride. This chalcogen also burns in air to form a solid polymeric dioxide and has got the highest electrical resistance amongst metals. The chalcogen isA. OB. SC. TeD. Se
Answer» Correct Answer - C Out of these four chalcogens, Se and Te reacts with hydrogen directly with great difficulty. Since Te has got the highest electrical resistance. Hence the metal is Te.

Discussion

No Comment Found

Related InterviewSolutions

When `SO_2` is passed through cupric chloride solutionA. A white precipitate is obtainedB. The solution becomes colourlessC. The solution becomes colourless and a white precipitate of `Cu_2Cl_2` is obtainedD. No visible change takes place
When `SO_2` is passed through acidified solution of `H_2S`A. `H_2SO_4` is formedB. `H_2SO_3` is precipitatedC. Sulphur is precipitatedD. `H_2S` is reduced.
Which of the following is not a true peroxide?A. `PbO_2 `B. `CO_2`C. `MnO_2`D. `BaO_2`
Which of the following oxides is a peroxide ?A. `Na_2O_2`B. `MnO_2`C. BaOD. `SO_2`
Which of the following oxides reacts with HCl and NaOH ?A. CaOB. ZnOC. `N_2O_5`D. `CO_2`
Sulphur does not exist as `S_2` molecule becauseA. it is less electronegativeB. it is not able to constitute `ppi-ppi` bondC. it has ability to exhibit catenationD. of tendency to show variable oxidation states.
Oxygen is prepared by the fractional distillation ofA. WaterB. Liquid airC. Hydrogen peroxideD. Heavy water.
`H_2S` reacts with `O_2` to formA. `H_2O +S`B. `H_2O+SO_2`C. `H_2O+ SO_2`D. `H_2SO_4 + S`
Percentage of `O_2` by volume in the atmosphere isA. 18B. 19C. 24.15D. 20.9
All of the following decompose easily on heating to give `O_2` exceptA. lead nitrateB. potassium chlorateC. mercuric oxideD. manganese dioxide.