#solve all mcq s
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Answers
1)newton
2)2nd law of motion
3)2*pie*radius/time
4)kilowatt/hour
5)potential energy
6)s=ut+1/2at^2
7)cations
8)mass number
9)2
10)18u
11)positive
1> newton
2> Law of conservation of momentum . It also works on the third law of motion, every action has an equal and opposite reaction.
3> speed=distance/ time
distance= 2πr
s= 2πr/t meter square
4>Watts
5>potential energy.
6>s=ut+1/2at^
7>cations
8> nucleus of an atom
9> valency=2
10>18.01528 g/mol
11> q= i * t
=0.4 * 300 { 5 m= 60 X 5= 300s}
q=120 culomb
12> 1 miliampere = 0.001 ampere
13> by ohm's law
v=i * r
therefore , i= v/r
i= 230/1000
i=0.23 a
14>Aluminum Phosphate
15>acidic nature
16> concave mirror
17>If two plane mirrors are placed together on one of their edges so as to form a right angle mirror system and then the angle between them is decreased, some interesting observations can be made. One observes that as the angle between the mirrors decreases, the number of images that can be seen increases.
18> it is called a weak electrolyte.
19>concave mirror
20> 20hz to 20000hz
21>sound navigation ranging
22>methane gas, carbon dioxide, and trace amounts of nitrogen, hydrogen, and carbon monoxide.
23> hydrogen, methane, carbon monoxide and volatile hydrocarbons procured by the destructive distillation of coal.
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