Question

DULUI PULIURE DU
7.
Question numbers 16 to 21 in Section A are five marks questions, to be answered in about word
Question numbers 22 to 27 in Section Bare based on Practical skills. Question 22 to 27 carry to
8.
marks each
m
56
1.
2.
Section 'A
20
Differentiate between Dalton's and Berzelius' method of allocating symbols to the elements.
What is the S.I. unit of speed?
3.
Among solids, liquids and gases, which one has?
(a) Maximum force of attraction between the particles.
(b) Minimum spaces in between particles.
A bridge is 500 m long. A 100 m long train crosses the bridge at a speed of 30 m/s. Find the time
by train to cross it.
5. Differentiate between Fertilizers and Manure.
(i) Write the full form of IUPAC.
(ii) Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxy
would be required to react completely with 3g of hydrogen gas?
7. Calculate the molecular mass of the following:
(a) Chlorine gas, (b) Ammonia gas (c) Sulphur trioxide gas
(Given atomic mass of Cl = 35.5 u, N = 14 u, H = lu, S = 32 u, O = 16 u)
6.​

Answer 1

Answer:

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