Which of the following movements can be described as random motion?
wheelbarrow being pushed
car travelling on a straight line
Gas molecules colliding in a flask
Planets going round the sun
Correct answer is C
No explanation has been provided for this answer.
Exhaust fumes discharged from a smoky vehicle gradually become invisible as a result of
diffusion
combustion
absorption
emission
Correct answer is A
No explanation has been provided for this answer.
122
101
53
40
Correct answer is D
One of the mole of M(HCO3)2 = 162g; M +(1 + 12 + 16 x 3) x 2 = 162; M +122 = 162,:. M = 162 - 122 = 40g
covalent
ionic
dative
metallic
Correct answer is B
No explanation has been provided for this answer.
Which of the following compounds has the highest ionic character?
PCI5
SiCI4
AICI3
KCI
Correct answer is D
No explanation has been provided for this answer.