Related InterviewSolutions

• In contact process inpurities of arsenic is removed byA. `Al(OH)_3`B. Gelatious `Fe(OH)_3`C. `Cr(OH)_3`D. `Fe_2 O_3`
• The function of `Fe(OH)_3` in the contact process isA. To detect colloidal impurityB. To remove moistureC. To remove dust particlesD. To remove arsenic impurity
• Anomalous behaviour of oxygen is due toA. It is highly electronegativeB. Small atomic sizeC. Non-availability of d-orbitalsD. All
• Which one has the lowest boiling point ?A. `H_2 O`B. `H_2 S`C. `H_2 Se`D. `KNO_3`
• Which one has the highest and lowest boiling point ?A. `H_2 O, H_2 S`B. `H_2 O, H_2 Se`C. `H_2 S, H_2 O`D. `H_2 S, H_2 Se`
• Which one of the following has the highest bond energy ?A. `O-O`B. `S-S`C. `Se-Se`D. `Te-Te`
• In its compounds, oxygen can show oxidation state `(s)` ofA. `- 1`B. `- 2`C. `+ 1`D. `+ 2`
• Solid `SeO_3` (selenium trioxide) and `TeO_3` exist respectively asA. Cyclic trimerB. Cyclic tetramerC. Chain structureD. Three dimensional net work structure.
• Sulphuric acid is considered as the king of chemicals. The prosperity of any country is measured by the amount of sulphuric acid it consumes. Sulphuric acid is, thus, a substance of very great commercial importance as it used practically ine every important industry. This is due to the following properties of sulphuric acid : (a) acidic nature (b) oxidising nature (c) dehydrating nature (d) sulphonation. Sulphuric acid is used.A. In lead storage batteriesB. In making fertilizersC. In making explosivesD. All of these
• The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on the basis of oxygen content. (a) Normal oxides : These oxides which contain oxygen atom as permitted by the normal oxidation number, i.e., `-2` normal oxide may be acidic, basic, amphoteric or neutral. (b) Polyoxides : The oxides which contain oxygen atoms different than those permitted by the normal oxidation number of `-2`. (i) Peroxides : Two oxygen atoms are linked to each other and oxyegen has `-1` oxidation number. They contain `(O -O)^(2-)` unit. (ii) Superoxodes : These oxides contain `(O-O)^(-1)` unit, i.e., each O-atom has oxidation number `-1//2`. (c) Suboxides : These contain low content of oxygen than expected. (d) Mixed oxides : These oxides are made of two simpler oxides. Which of the following pairs contains neutral oxides ?A. `SO_2, SO_3`B. `N_2 O_3, N_2 O_5`C. `CO, NO`D. `Na_2 O, CaO`