| 1 |
What is the percentage of carbon in anthracite? |
60%
70%
80%
90%
|
| 2 |
Organic compounds contain: |
ionic bond
Covalent bond
Metallic bond
Co-ordinate covalent
|
| 3 |
Aromatic compounds are given this name because of; |
smell they have
slippery touch they have
bitter taste they have
sour taste they have
|
| 4 |
Open chain compounds are also called: |
aliphatic compounds
alicyclic compounds
aromatic compounds
hydrocarbons
|
| 5 |
Chemical formula for urea is: |
NH4CNO
NH4CH
NH2CONH2
NH4CI
|
| 6 |
Who put forward '' the vital force theory''? |
Kolbe
Wohler
Berzellius
Jabir - Bin - Hayan
|
| 7 |
Acid used for cleaning metals , tanning and in printing industries, is: |
H2SO4
HNO3
CH3COOH
HCI
|
| 8 |
Soda time is a mixture of: |
CaO and NaOH
CaCI2 and NaOH
CaO and ca(OH)2
CaCI2 and KOH
|
| 9 |
Sum of PH and POH of a solution is: |
7
14
16
18
|
| 10 |
Water is a; |
strong electrolyte
non-electrolyte
weak electrolyte
natural compound
|
| 11 |
Which acid is found in sour milk? |
`Formic acid
Lacitc acid
Citric acid
Butric acid
|
| 12 |
Which of one the following is Lewis base? |
BF3
H+
NH3
Ag+
|
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