GENERAL QUESTION
1.
Why water wets
glass while mercury does not.
2.
Answer:
Water wets glass because the force of adhesion between the glass molecules and
water molecules is greater than the force of cohesion between the water
molecules and glass molecules. Mercury does not wet glass because the force of
cohesion is greater than the force of adhesion
3.
You are standing
at the top of building. How will you measure the height of building by dropping
stone from it?
4.
Why it is easier
to roll a barrel, on road than to pull it.
5.
Why does an object weight less at equator than
at poles?
6.
Why white roof
keeps a house cooler as against black roof.
7.
Why cloudy night
are hotter than clear night.
8.
Why does metal bench in feels in cooler in
winter compared with a wooden bench and feels hotter in summer as compared with
a wooden bench.
9.
Why a thick glass or jug cracks when very
hot water is poured into it.
10.
Why we bring our hands closer to mouth
while shouting to some body at distance.
11.
Why grass looks black in blue lights.
12.
What
is meant by persistence of vision?
13.
It’s a pitch dark night. You are standing
near tall building .a rope is hanging
from a top of building to the bottom, How will measure the height of the building.
14.
Name the Pakistani scientist who won the
noble prize.
15.
Name at least three subject in which noble
prize is given.
16.
Russian equivalent of American Astronaut
is -------------.
17.
Independence of Pakistan according to
Islamic calendar in --------------.
18.
Name of UN secretary general is
-------------.
19.
Name the most populous country of the
world------------------.
20.
Who
wrote the national anthem of Pakistan? ---------------.
21.
If a velocity of body increasing the
acceleration is
i. Positive
ii. Negative
iii. Zero
22.
A ball throwing competition is going among
children what angle of throwing
you will suggest for them so that the ball can cover the maximum distance.
23.
As we go below the surface of earth the
value of ‘g’.
iv. Increase
v. Decrease
vi. Same
24.
Work done is maximum when force is
----------- to displacement.
vii. Equal
viii. Perpendicular
ix. Parallel.
25.
The average kinetic energy of the
molecules of the object is called its----
x. Heat
xi. Temperature
xii. Specific
heat
26.
Number of molecules in one kilo mole are.
xiii. 6.025x
1026
xiv. 2.73x 1026
xv. None
27.
The kinetic energy of molecules of an
ideal gas at absolute zero will be
xvi. Very low
xvii. Very
high
xviii. Zero
28.
First law thermodynamics is restatement of
the
xix. Law of
conservation of energy
xx. Law of
conservation of momentum
xxi. Law of
conservation of mass
29.
In an adiabatic expansion of gas
xxii. Heat is
gained or lost
xxiii. Heat is
neither gained nor lost
xxiv. Volume is
kept constant
30.
The electric field lines always start from
a
xxv. Positive
charge
xxvi. Negative
charge
xxvii. Point
charge
31.
The phenomenon that the resistance of
metal falls exactly to zero at a few degrees
above absolute zero is called
xxviii. Conductivity
xxix. Super
conductor
xxx. Super
resistivity
32.
Which
one following bulb has a least resistance
xxxi. 100 watts
xxxii. 1000
watts
xxxiii. 500
watts
33.
On a hot day or in a hot climates white
cloth are worn because they are
xxxiv. Absorber
xxxv. Reflector
xxxvi. Emitter
34.
Strength
of an electro magnetic field can be increased
xxxvii. Increasing
current supply
xxxviii. Adding
more coiled wire
xxxix. All
35.
A bus and car is moving the same velocity
if a same retarding force is applied
on both of them which will first come to rest.
xl. The car
xli. The bus
xlii. Both
36.
The number of protons or electrons present
in an atom of an element is called.
xliii. Atomic
weight
xliv. Molecular
weight
xlv. Atomic
number
xlvi. Mole
37.
In a collection of 2.48 x 1026
molecules of C2H5OH,
what is the number of moles of carbon
atoms?-------------.
38.
1 a.m.u =
------------------.
39.
Low temperature can be produced by the
---------------of gases.
xlvii. Compression
xlviii. Expansion
xlix. Contraction
40.
What we mean by standard temperature and
pressure.
l. 0 C
li. 0 K
lii. 25 C
liii. 700 mm
liv. 76 cm
lv. 10 cm
41.
During respiration we inhale air: in lungs
oxygen is taken from air CO2 is given to
air, why in lungs oxygen passes from fresh air to lungs.-------------
42.
The temperature at which volume of gas
theoretically become zero is called
-------------temperature
43.
22.4 liters of CO2 is
--------------than 22.4 liters of SO4.
lvi. Heavier
lvii. Lighter
lviii. Equal
44.
The viscosity of liquid decreases with the
-------------temperature.
45.
Mercury does not stick to glass because of
high --------------.
lix. Density
lx. Viscosity
lxi. Surface
tension
46.
The Le- Chatelier’s principle in case of
exothermic reaction the formation of
products is favored at --------------- temperature.
lxii. Lower
lxiii. Higher
lxiv. None
47.
Calculate the molarity of solution
containing : 3g of H2SO4 in 200 ml
lxv. Fe3+
+ e- ---------------à
Fe2+
1. Above is
the oxidation reaction or reduction reaction.
48.
Why steam causes more sever burns than
does the boiling water.
49.
Calculate the pH & poH of a solution
whose hydrogen ion concentration is 2.0
x 102 moles per liter
50.
Slope of x-axis or of any line parallel to
x-axis is --------
lxvi. 0
lxvii. Base / 2
lxviii. Undefined
51.
d / dx (lnx) =
lxix. X
lxx. 1/x
lxxi. Lnx
52.
Sum of the square on the two sides of a
right angle triangle is equal to the square
on the
lxxii. Base
lxxiii. Perpendicular
lxxiv. Hypotenuse
lxxv. None
53.
What are the roots of the quadratic
equation 2y2 – 6y + 3 = 0
lxxvi. 2
+ √ 3 / 2, 2- √ 3/2
lxxvii. 3
+ √ 3 / 2, 3+ √ 3/2
lxxviii. 2
,-15
54.
What is solution of equation?
11x + 15y + 23 = 0
7x – 2y – 20 = 0
lxxix. 7,1 ii -2.3 iii 2,-3 2,3
54.
(2a3 / b4 ) 4
lxxx. 16a12
/ b16
lxxxi. 16a11
/ b16
lxxxii. 16a82
/ b16
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