Plz answer the ticked ones.. fast answer the question

C. mustn't
d.2option
e 1option
f.2option
g 1option
h 1option
i 1option
j 1option

C.(1)
d.(2)
e.(1)
f.(2)
g.(1)
h.(1)
I.(1)
j.(1)

1 potassium nitrate
2 potassium nitrate
3 18 g
4 no change on 293 and 313 but rise 1g when temperature is 333
5 36 g

1-a) wavelength
b)path

3-A)-(iv) a star does not twinkle beacuse of the refraction the star appears to be twinkle,the light coming from a star get refracted in th gases of atmosphere.
(b) refraction

1.(i) 3/5×7/11=21/55
(ii) 5/8×4/7=20/56=5/14
(iii)4/9×15/16=60/144=15/36
(iv)2/5×15=6
(v)8/15×20=32/3
(vii)25/8×16=50
(ix)27/7×12/2=27/7×2=54/7
2.(ii)=12/25×15/28×35/36
=1/1×1/2×1/2
=1/4
(iv)=11/7×35/22×16/15
=1/1×1/1×8/3
=8/3
✔️ That's all

××

Thank You‼

On cancelling,

Let's divide, 52pqr / 104pq = 1r / 2

Rest, ( q + r )( r + p ) got cancelled.

So we get,


Similarily,



Moreover,



⭐ Rembering point : Factorising means that terms should be in multiplication.

Have great future ahead!

b.m=1/2 ;c=1

c.m=-3 ;c=1

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