Thermally most stable compound is :
(1)
(2)
(3)
(4)
Which of the following halogen oxide is used for estimation of carbon monoxide in automobile exhaust gases?
(1)
(2)
(3)
(4)
Only iodine forms hepta-fluoride , but chlorine and bromine give Penta-fluorides. The reason for this is :
(1) low electron affinity of iodine
(2) unusual pentagonal bipyramidal structure of
(3) that the larger iodine atom can accommodate more number of smaller fluorine atom around it
(4) the low chemical reactivity of
Nitrogen gas is liberated by thermal decomposition of :
(1)
(2)
(3)
(4) All
Two oxides of nitrogen, and are allowed to react together at and form a coloured compound of nitrogen (X). When compound (X) reacts with water to yield another compound of nitrogen (Y). The shape of the anion of (Y) molecule is :
(a) triangular planar (b) triangle pyramidal
(c) tetrahedron (d) square planar
Consider the following sequence of reaction.
Identify [Z] gas :
Which of the following statements is true?
1. | NH3 is less soluble than PH3 in water |
2. | NH3 is a stronger base and stronger reducing agent than PH3 |
3. | NH3 has a higher boiling point than PH3 and has a lower melting point than PH3 |
4. | PH3 is a stronger reducing agent than NH3 and it has lower melting critical temperature than NH3 |
Which of the following on heating produces ?
(a) (b)
(c) (d)
Compound (A),(B) and (C) will be respectively :
(a) (b)
(c) (d)
Which of the following is in the correct sequence?
[For the correct order mark (T) and for the incorrect order mark (F)]:
(a) | Lewis acidity order | |
(b) | Melting point | |
(c) | Boiling point | |
(d) | Dipole moment order |
(a) | (b) | (c) | (d) | |
1. | F | T | F | T |
2. | T | F | T | F |
3. | F | F | T | T |
4. | F | F | T | F |