ICSE Class 9 Answered
Each question has four options out of which only one option is correct. Write the correct option.
(i) Choose the air pollutant which is non-acidic.
(a) NO2
(b) SO2
(c) SO3
(d) Ozone
(ii) Choose the odd one.
(a) HCl
(b) H2CO3
(c) HNO3
(d) H2SO4
(iii) On adding water to sodium, the solution formed is-
(a) Neutral
(b) Alkaline
(c) Acidic
(d) Amphoteric
(iv) According to Boyle's law, as the pressure increases volume-
(a) Increases
(b) Decreases
(c) Remains same
(d) First increases and then decreases
(V) In the element , 11 represents-
(a) Mass number
(b) Atomic number
(c) Number of neutrons
(d) None of these
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
(i) (d) Ozone
(ii) (a) HCl
(iii) (b) Alkaline
(iv) (b) Decrease
(v) (b) Atomic number
(ii) (a) HCl
(iii) (b) Alkaline
(iv) (b) Decrease
(v) (b) Atomic number
Answered by | 04 Jun, 2014, 03:23: PM
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