CBSE PHYSICS

General Science Questions and Answers

No.	Question	Answer
1	The theory of relativity was propounded by	Albert Einstein
2	The principal metal used in manufacturing steel is	Iron
3	An altimeter is used for measuring	Altitude
4	Oology is the study of	Bird Eggs
5	Radioactivity was discovered by	Henry Bacquerel
6	The metal used in storage batteries is	Lead
7	The instrument used to measure the relative humidity of air is	Hygrometer
8	Barometer was invented by	Torricelli
9	The unit of power is	Watt
10	Radium was discovered by	Marie and Pierrie Curie
11	The existence of isotopes was discovered by	Frederick Soddy
12	Dynamo was invented by	Michael Faraday
13	The nuclear reactor was invented by	Enrico Ferni
14	The law of gravitation was propounded by	Sir Isaac Newton
15	Crescograph was invented by	J.C.Bose
16	Crescograph is used to measure the	Rate of growth of a plant
17	Galileo's first scientific discovery was	Pendulum
18	Microscope was invented by	Aaton Van Leewen Hock
19	The scientist who is known as father of modern biology is	Aristotle
20	The first person to see a cell under microscope was	Robert Hooke
21	The smallest flowering plant is	Worffia
22	The four blood groups were discovered by	Karl Landsteiner
23	Sodium was discovered by	Sir Humphry Davy
24	The atomic number of oxygen is	Eight
25	The basic building blocks of proteins are	Amino acids
26	The botanical name of the cotton plant is	Gossipium Hirsutum
27	An Electroscope is used to	Detect charges on a body
28	The unit of loudness is	Phon
29	An ammeter is used to measure	Electric current
30	Plant that eat insects are called	Insectivorous plants
31	Fruits that are formed without fertilization are called	Parthenocarpic
32	Plants that flower only once in their lifetime are called	Mono carpic
33	The botanical name for rice is	Oryza Sativa
34	Penicillin is obtained from	Mould
35	The largest tree in the world is	Seguoia Gigantica
36	Herpetology is the study of	Reptiles
37	Entomology is the study of	Insects
38	Ornithology is the study of	Birds
39	Ichtyology is the study of	Fishes
40	Osteology is the study of	Bones
41	The botanical name for brinjal is	Solanum melongenal
42	The botanical name for onion is	Allium Cepa
43	The study of sound is called	Acoustics
44	The study of heavenly bodies is called	Astronomy
45	The study of tissues is called	Histology
46	Electric Lamp was invented by	Thomas alva Edison
47	The fear of crowd is called	Ochlophobia
48	The fear of books is called	Bibliophobia
49	The fear of going to bed is called	Clinophobia
50	The symbol of gold is	Au
51	The symbol of sodium is	Na
52	The symbol of Sr stands for	Strontium
53	The symbol Rb stands for	Rubidium
54	The symbol Md stands for	Mendelevium
55	Calcium sulphate is commonly called	Plaster of Paris
56	Sodium carbonate is commonly called	Washing Soda
57	Sodium chloride is commonly known as	Common Salt
58	The chemical name of Chloroform is	Trichloromethane
59	The chemical name of baking powder is	Sodium bicarbonate
60	The chemical name of bleaching powder is	Calcium hypochlorite
61	The formula HCL stands for	Hydrochloric Acid
62	The formula H2SO4 stands for	Sulphuric Acid
63	The formula CHCI3 stands for	Trichloromethane
64	The formula H2O2 stands for	Hydrogen peroxide
65	A fungus which can only survive on other living organisms is called	Obligate Parasite
66	A plant which lives in the dark is called	Scotophyte
67	A plant adapted to live in dry places is called a	Xerophyte
68	A plant adapted for growth in water is called a	Hydrophyte
69	Bifocal lens was invented by	Benjamin Franklin
70	Cement was invented by	Joseph Aspdin
71	Laser was invented by	Dr.Charles H.Townes
72	Electromagnet was invented by	William Sturgeon
73	Rayon was invented by	Sir Joseph Swann
74	Thermostat is an instrument used for regulating	Constant temperature
75	The science of organic forms and structures is known as	Morphology
76	Phycology is the study of	Algae
77	Tata Institute of Fundamental Research was established in	1945
78	CSIR stands for	Council of Scientific and Industrial Research
79	ISRO stands for	Indian Space Research Organisation
80	The first human being to land on moon was	Neil Armstrong
81	The first Indian in space was	Rakesh Sharma
82	ISAC stands for	ISRO Satellite Centre
83	VSSC stands for	Vikram Sarabhai space Centre
84	The headquarters of ISRO is located at	Bangalore
85	VSSC is located at	Thiruvananthapuram
86	ISAC is located at	Bangalore
87	National Science Centre is located at	New Delhi
88	Central Tobacco Research Institute is located at	Rajahmundry
89	Indian Institute of Horticultural Research is located at	Bangalore
90	The Atomic Energy Commission was set up in	August 1948
91	The first Indian Satellite was	Aryabhatta
92	The first Indian Satellite was launched in the year	1975
93	ASLV stands for	Augmented Satellite Launch Vehicle
94	INSAT stands for	Indian National Satellite
95	The fear of women is known as	Gynophobia
96	The fear of men is known as	Androphobia
97	The scientist who developed the Quantum theory was	Max Plonck
98	The steam engine was invented by	James Watt
99	The botanical name of tea is	Camellia Sinensis
100	Logarithms were devised by	John Napier
101	The acid used in a car battery is	Sulphuric acid
102	The system for writing by blind people was invented by	Louis Braille
103	The parachute was used for the first time by	J.P.Blanchard
104	The German physicit who first demonstrated the existence of Radio waves was	Henrich Hertz
105	The instrument that records the intensity of earthquakes is	Seismograph
106	The laws of floating bodies was discovered by	Archimedes
107	The density of milk is measured by a	Lactometer
108	Fountain pen was invented by	L.E.Waterman
109	The instrument used to measure the pressure of gases is the	Monometer
110	Bhaskara I was a famous	Astronomer
111	The first atomic power station established in India was the	Tarapore Atomic Power Station
112	The role of heredity was demonstrated by	Mendel
113	The instrument used to measure the concentration of salt water is the	Salinometer
114	Spectroscopy is the study of	Anders John Angstrom
115	Dactylography is the study of	Finger Prints
116	A tangent galvanometer is used to study the	Strength of direct current
117	The fruit of Oak is called	Acron
118	ZETA stands for	Zero Energy Thermonuclear Assembly
119	The formula C6H5OH stands for	Phenol
120	Michael Faraday worked as an assistant under another scientist whose name was	Sir Humphry Davy
121	Vulcanised rubber was invented by	Charles Goodyear
122	The symbol Zn stands for	Zinc
123	The symbol He stands for	Helium
124	Celluloid was invented by	A.Parker
125	Glider was invented by	Sir George Caley
126	Safety matches was invented by	J.E.Lundstrom
127	Radio valve was invented by	Sir J.A.Fleming
128	Space Applications Centre is located at	Ahmedabad
129	Atomic Energy Commission is located at	Mumbai
130	Dynamics is the study of	Movements of bodies
131	Statics is the study of	Forces acting on bodies at rest
132	Mechanics is the study of	Forces acting on bodies
133	Zoology is the study of	Animal life
134	Botany is the study of	Plant life
135	Psychology is the study of	Human mind
136	The first American to orbit earth was	John H.Glen
137	The electro-cardiograph was invented by	William Einthoven
138	The molecular formula of cane sugar is	C12H22O11
139	A compound which contains only hydrogen and Carbon is called a	Hydrocarbon
140	The liquid used to preserve specimens of plans and animals is	Formalin
141	The law of segregaton was propounded by	Mendel
142	Auriscope is used to detect	Ear disorders
143	The three states of matter are	Solid,liquid and gas
144	The scientific name for blood platelets is	Thrombocytes
145	The response of a plant to heat is called	Thermotropism
146	The response of a plant to touch is called	Trigmotropism
147	The symbol Zr stands for	Zirconium
148	Nickel was discovered by	Cronstledt
149	Manganese was discovered by	Gahn
150	The common name for pottasium carbonate is	Potash
151	Bismuth was discovered by	Valentine
152	The biggest plant seed is	Cocodemer
153	Toxicology is the study of	Poisons
154	Virology is the study of	Viruses
155	Paleontology is the study of	Fossils
156	Calorimeter is used to measure	Quantity of heat
157	Chronometer was invented by	John Harrison
158	Stethoscope was invented by	William Stockes
159	Spinning frame was invented by	Sir Richard Arkwright
160	Al stands for	Aluminium
161	Gd stands for	Gadolinium
162	Ir stands for	Iridium
163	Bi stands for	Bismuth
164	The Chemical formula of sodium bicarbonate is	NaHCO3
165	The chemical formula of common salt is	Nacl
166	The chemical formula of washing soda is	Na2CO3,IOH2O
167	The chemical formula of lime soda is	CaCO3
168	The chemical formula of chloroform is	CHcl3
169	The study of grasses is known as	Agrostology
170	The study of antiquities is known as	Archaeology
171	The study of the duration of life is known as	Chronobiology
172	The study of bacteria is known as	Bacteriology
173	Nylon was invented by	Dr.Wallace H.Carothers
174	Electric razor was invented by	Jacob Schick
175	The symbol of silver is	Ag
176	The symbol of silicon is	Si
177	The symbol of titanium is	Ti
178	Calcium oxide is commonly known as	Quick lime
179	A deviation of light passing from one medium to another is known as	Refraction
180	An apparatus for generation of atomic energy is called a	Reactor
181	A machine used for converting mechanical energy into electrical energy is called a	Generator
182	The first Indian woman in space was	Kalpana Chawla
183	The revolver was invented by	Samuel Colt
184	The refrigerator was invented by	J.Perkins