1 We are now living in the geological era called
2 A concave mirror forms
Both real and virtual images
3 Helium is
A very light gas
4 Helium was discovered in
5 A n atom of iron is how many times heavier than an atom of hydrogen?
6 The rays that are used to detect defects or diseases of bones are
7 Red paint inside a cane does not look red. What does it look like?
8 An object that absorbs all lights and reflects none appears
9 Till recently man’s greatest invention was considered to be the wheel. At present, man is caught in the struggle to
Obtain maximum energy from atom
10 Water at the top of a fall or behind a dam is an example of
11 Heat is a form of energy. When we measure heat, we measure energy. Energy is measured in
12 Volta is known to have discovered
13 The scientific name of common salt is
14 The method of feeding, which is the characteristic to plants is called
15 X-rays were discovered by
16 The cells of a woody stem which are most important for the growth in thickness are called
17 The rules to prove that specific germs causes a specific disease were suggested by
18 The real image formed by a convex lens
May be either larger or smaller than the object
19 Anthropology means
Mental and physical state of mankind
20 What are the first plants to establish on bare rock?
21 The deoxygenated blood from the body is brought to the
22 The digestive juice produced in the ileum is called
23 The cells which are important for mechanical support are called
Dead Xylem Tissue
24 The fact that bacteria do not originate by spontaneous generation was proved by
25 The ultimate source of solar energy is
26 The rear view mirror in car is
27 The plants which are sensitive to colour are called
28 As the amount of oxygen reduces, the number of red blood cells
29 The name given to flowers in which the Pistil ripen before the stamen is
30 The enzyme pepsin digests
31 Sir Isaac Newton predicted that the earth could not be perfectly round because
It is rotating
32 Hydrogen Bomb is based upon
33 An object in equilibrium
May be accelerating
34 The velocity of sound in water at 9 C is
35 The recorder records sound in the form of
Variable resistance on the tape
36 The region from which a leaf springs is called the
37 Respiration in plants and animals is
38 Overcoming gravity can be compared to
Climbing out of pit
39 Heat energy passes from
Hotter to colder body
40 Air contains what percentage of Oxygen?
41 What is Humus?
Decomposed animal and vegetable matter
42 In case of oxidation one thing is common. It produces ___________ and gives it off. This is an extremely useful thing.
43 What is the blackboard chalk made of?
44 The three main classes of human foods are
Fats, Carbohydrates, Vitamins
45 The chemical process within the body connected with the breaking and building of organic compounds is known as
46 Fungi are called simple plants because they
Do not have root, stem and leaves
47 Mushrooms are
48 When our body perspire, it
Cools the body
49 In the body, salt is eliminated mainly by
50 A defect in lens due to the dispersion of light is called
51 At Absolute Zero Temperature
All molecules come to rest and have zero energy
52 Morphine is an
53 The principal organ concerned in the loss of heat from the body is
54 The condition in which the eyes are weak and tire easily is called
55 The roofs of houses in hot countries are often made of corrugated steel. This is because the steel
Reflects the sun’s heat
56 Henry is the unit of
Both self and mutual inductance
57 Lack of Vitamin A causes
Poor night vision
58 If a star emitting yellow light starts moving towards the earth, its colour as seen from the earth will
Turn gradually blue
59 The act of sneezing is an attempt by the body to expel air to get rid of the
60 Who was the father of medicine?
61 Who started vaccination?
62 The three means of transfer of heat from hotter to colder body are
Conduction, Convection and Radiation
63 A German chemist and physicist who is considered as the father of Atom Bomb is
64 What is the temperature of the surface of the sun?
65 Dew occurs when temperature of the cool surface drops below a certain level or point. What is it called?
66 Which is the most common and popular industrial fuel?
67 Which gas is used to help people suffer from Asthma to breathe better?
68 A Proton is heavier than
69 Energy is obtained by splitting the atom. But do you know where does in the atom energy resides?
In the core
70 A radiator will emit the most heat if it is
71 The sensitive of a moving coil galvanometer can be increased by
Increasing the number of turns of the coil
72 Poikilothermic means
73 Cervix is a ring of muscles closing the lower end of uterus where it
Joins the vagina
74 Which device is used as a particle accelerator?
75 The unit of luminous efficiency of electric bulb is
76 Fish is the best source of
77 Insulin is secreted by
78 The blood system of man is
79 With increase in temperature, the viscosity of
Gases increases and liquids decreases
80 As the velocity of particle increases, its mass
81 The part of the total gravitational force which is required to constrain a body to move in a circular path is called
82 Leukaemia is a type of cancer in which there is an abnormal increase in nuber of
White Blood Cells
83 The life functions that a virus apparently performs are
Respiration and Reproduction
84 As the gradient of a stream increase, its ability to carry materials
85 Out of the following radiations the maximum energy of Photons is with
86 In a semi-conductor, mobility of holes is
Equal to that for electrons
87 An object is projected upwards with a velocity of 100 M/S. It will strike the ground in about
88 What will be the main source of energy for mankind in distant future?
89 The Telephone was invented by
90 Those colours that are obtained by mixing some other colours are called
91 What colour do we see in a room where there is no light?
No colour at all
92 An aeroplane is said to have crossed the sound barrier if it travels at or beyond a certain speed. What is this speed per hour?
93 How many kinds Friction has?
94 The TWO kinds of Friction are
Sliding and Rolling friction
95 Friction between the substances of same kind is
96 Coal is the remains of
Ancient animals and plants
97 Pure Silver does nit tarnish in pure air. When it turns black that is a sign that there is _______ in the air.
98 Planets of the Solar System shines with the light of
99 The stars twinkles because of
The disturbances in the atmosphere of different densities
100 The Two personalities that invented submarine are
Drebbel and D. Bushnell