Chemistry
Ammonia gas is collected by downward displacement of air since ammonia is:
- very slightly soluble in water.
- heavier than air.
- lighter than air.
- insoluble in water.
Related Questions
On passing ammonia gas over heated copper oxide for some time, a reddish-brown residue is left behind. What property of ammonia is demonstrated here?
- Basic property
- Oxidising property
- Reducing property
- Acidic property
Rotten egg smell is due to the liberation of:
- HCl gas
- H2S gas
- Cl2 gas
- SO2 gas
Which of the following would occupy 22.4 litres at S.T.P.?
(1) 32g of oxygen gas
(2) 2 moles of hydrogen gas
(3) 6.022 x 1023 molecules of ammonia
- 1 & 2
- 1 & 3
- 2 & 3
- 1, 2 & 3
[Atomic weights: O = 16, H = 1, N = 14]
In the molecule of water, oxygen atom has:
- One shared pair of electrons.
- Three shared pairs of electrons.
- Two lone pairs of electrons.
- One lone pair of electrons