Chemical Properties
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- Chemical properties remain similar in a homologous series.
- As the size of carbon chain in any homologous series increases, a gradation in physical properties is seen.
- All of the above.
- Melting and boiling point increase with molecular mass.
Name the enzyme which converts: [3 MARKS]
1. Milk into curd (yogurt)
2. Cane sugar into glucose and fructose
3. Glucose into ethanol.
Gas A, which is the major cause of global warming, combines with hydrogen oxide B in nature in the precence of an environmental factor C and a green material D to form a six carbon organic compound E and a gas F. The gas F in necessary for breathing.
(a) What is gas A ?
(b) What is the common name of B ?
(c) What do you think could be C ?
(d) What is material D ? Where is it found ?
(e) Name the organic compound E.
(f) What is gas F ? Name the natural process during which it is released.
What happens when concentrated sulphuric acid is added to glucose?
Water is removed from glucose
O2 gas is evolved
SO3 gas is evolved
Which of the following acids is prepared by sulphuric acid industrially?
Nitric acid
Hydrochloric acid
Phosphoric acid
Acetic acid
Sulphuric acid is not reacted with sodium chloride above a temperature of 200 degrees celcius as the glass apparatus gets damaged due to :
Sodium bisulphate
High heat
High pressure
Sodium sulphate
The property due to which a substance abosrbs moisture and dissolves in it is called
hygroscpoic
deliquescent
efflorescence
flouroscence
Metals get oxidised to their respective sulphates when they are reacted with conc. sulphuric acid.
Select the option which is a property of sulphuric acid?
The strong affinity of sulphuric acid for water
The non-affinity of sulphuric acid for water
The geometry of the sulphuric acid molecule
The hydrophobic nature of sulphuric acid
The gas released when conc. sulphuric acid reacts with formic acid is :
Sulphur dioxide
Sulphur trioxide
Carbon monoxide
Carbon dioxide