Question

2 choose the correct alternative and
chemente the sleetements to
Combustion of coal in air is a
heaction
a combination b) displacement
c) decomposition d) doubledisplacement
5 when electric Current aspassed throud
the solenoid, it shows magnetic lines
of force similar to a
a) barmagnet b) horse shoe magnet
c) disk magnet d) Spherical magnet
③ The Crystals of Persous Sulpheets
are
a) Blue an Colour b) pink in Colour
a pale green in Colour al Colourless
(4 A laser becamenters from air to Soup
Solution Pnwater then
a) it goescuway from the normal
b) it bends to wards the normal
c et travels Strights without bending
d) est outwens back into air
& when temperature of water is leduced below
(a) (b) 4 o 5 Celn​

Answer 1

Answer:

1)a

2)a

3)b

4)a

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