• Which metal is always found in free state in nature-Gold.
• Bauxite is an ore of-Aluminum.
• Material used for bleaching pulp is-Sodium Hypo -chlori
• Which gas is leaked in Bhopal gas tragedy-Methyl Isocyanides.
• The chemical name of table salt is-Sodium Chloride.
• Chemical name of Vitamin C is –Ascorbic Acid.
• Bone is used as fertilizer because it contains the plant nutrient-Phosphorus.
• Baking soda is-Sodium Bicarbonat.
• Plaster of Paris is made from-Gypsum.
• Which element is common in all acids-Hydrogen.
• Which element is common in all organic compounds is -Chlorine.
• What is the function of Green leaves in plants –Photosynthesis.
• Which is largest Gland in human body Liver
• Which is largest Organ in human body –Skin
• Which is longest Bone in human body –Femur
• Which Gland is called the master Gland –Pituitary
• How many Bones in adult human body –206
• How many Bones in child’s body –300
• What is the temperature of normal human body –36.9C.
• Which is the helps in clotting in blood –Vitamin K.
• Total volume of blood in normal adult human body 5-6iiters.
• Red blood corpuscles(RBC)are formed in the bone marrow
• The largest part of the human brain is the –cerebrum
• What is main component of the bone and teeth –Calcium Phosphate
• The main constituent of hemoglobin is –Transport Oxygen
• The main function of Hemoglobin is - Transport Oxygen.
• Malaraia is a disease which effect the –Spleen
• Leukemia is a disease of the –Blood.
• Rickets is a disease of the –Bones.
• ECG is used for the diagnosis of ailments of –Heart.
• Food is normally digested in the –Small intestines.
• The main function of the kidney is –To remove waste product from body
• The human cells contains –46 Chromosomes
• Acquired immune-deficiency syndrome(AIDS)is caused by –Virus
• The light with the longest wave length in the visible spectrum is – Red.
• In the electric bulb, the gas used is – Inert.
• Centigrade and Fahrenheit scales resemble at ( –40C).
• Study of insects is called – Entomology.
• The inner layer of the skin is called – Dermis
• Nucleus of an atom has – Neutrons and Protons
• Marsh gas is – Methane
• In fireworks the green flame is produced because of – Barium
• Nuclear fission is caused by the impact –Neutron
• Atom Bomb is based on principal of – Nuclear Fission.
• Glass is made from the mixture of – Sand and Salt.
• Permanent hardness of water may be removed by the addition of – Sodium Carbonate.
• P.V.C is obtained by the polymerization of – Vinylchtoride
• The pursuit form of iron is – Cast Iron
• The element found on the surface of the moon is –Titanium
• One joule is equivalent to-10 ergs
• The most efficient engine is –Electric
• Wisdom teeth normally grow during the age of- 17- 30 years
• The yellow colures of urine is due to the presence of –Urochrome.
• Life of RVC in human blood is of –120 days.
• How many teeth are known as milk teeth in human beings – 20.
• Colure of the skin due to presence of -Melanin
• Bile juice secreted by -Lactro meter
• The smallest cell in the human body are –Blood cells.
• Food is mainly digested in –small intestine.
• The number of ribs in human body is –24
• The smallest bone in the human body is – Stirrup
• Total number of bones in human skill are- 30
• The hitting element in an electric iron is made of –Tungsten.
• A nuclear reactor uses as fuel –Uranium.
• The Velocity of light was first measured by –Roemer.
• The purity of milk is checked by –Lactro meter.
• The hottest part of the flame lies in its –Non luminous Zone.
• The first life came on this earth –In Water
• An object weights maximum in –Vacuum
• Which is the semiconductor –Silicon
• Ic Chips for Computers are usually made of –Silicon
• A device used for converting AC into DC is
• called-Rectifier.
• The volume Urine produced in an adult human every 24 hours is-1.5Liters.
• The average Gestation period of Sheep is –150 days.
• The Smallest possible unit of a comical compounds is –Molecule
• The Vitamin which contains Cobalt is –B12
• The first metal to used by man was Copper
• All acid essentially contain the element –Hydrogen
• The main active continent of tea and coffee is –Caffeine.
• Pencil lead is made up of –Graphite.
• The human body contains the maximum amount of –water.
• Which gases ifs filled in balloons –Helium.
• Rickets occurs due to the deficiency of –Vitamin A
• Rocket launched station in Life-expectancy –Sriharikota
• A lemon is sour is because of –Citric acid
• Animals having hair and giving birth to young ones are called –Mammals
• Resistance in Series –R=R1+R2+R3+R………..
• Resistance in Parallel –1/R=1/R1+1/R2+1/R3
• Sound travels the fastest in –Steel
• Tuberculosis (T.B) is caused by –Bacteria
• Temperature –C/100=F-32/180=K-273.15/100
• Cow’s milk is slightly yellowish in hue due to –Riboflavin
• The blue color of the sky is due to –Scattering of light
• Clinical thermometer range –95F to 110F
• Gold is a noble metal because it –is chemically less reactive
• Which of the following is a bad conductor of electricity -Rubber
• RDX is an explosive
• In oxygen things burn –Brightly
• What is water is composed of –Oxygen and Hydrogen
• Domestic electric fitting are connected in Parallel
• Cooking utensils are made up of metals because metals –are good conductors of heat
• The voltage of the domestic electricity is –220 volt
• The voltage of electicity used in factories is –440 volt
• Which is the major source of the energy in human diet –Starch
• A satellite is kept in circular orbit due to the gravitational –force of the earth
• Hair, on our body, are meant to –Be a organs of defence
• Velocity of a body is –Rate of changes of its position
• Dialysis is done when –Kidneys fail
• The speed of the Rocket Launcher is –Greater than ---11.6 KM per second
• The color of carrot is red is due to –the presence of pigments
• An instrument to measure the density of liquid –Hydrometer
• The blood pressure of a normal human being is –120 /80 mm /Hg
• During sleep, man’s blood pressure –Fluctuates
• Copper is mainly used in –Electric wires
• It is known as the silent killer –Blood pressure
• Human body’s weight on the earth is maximum at –Poles
• Which gas helps in extinguishing fire –Carbon dioxide
• Marble is the changed form of –Limestone
• Insulin is given for the treatment of –Diabetes
• If a magnet is divided into two pieces –Both the pieces become independent magnets
• Dehydration is loss of –Water
• Which part of body typhoid affects –Intestines
• One pound is equivalent to –453 gms
• Diamonds are made up of –Carbon
• Hydrophobia may effect a person suffering from –Dog bite
• Carbon-dioxide as compared to air is –Heavier
• Distance traveled by light in one year is called –Light year
• One is germicide –Potassium permanganate
• Jaundice is a disease of –Liver
• Food poisoning is Caused by –Micro- organism
• Formation of rust on iron is what kind of phenomenon –Chemical
• The good conductor of electricity –Copper
• Mercury is used in thermometers because it –Expands uniformly
• Considered a balanced diet –Milk
• Scientific study of micro-organs –Microbiology
• Pollutes the environment –Carbon monoxide
• Which bone related to head –Skull
• When a piece of ice floats on water, its level –Remains the same
• Nights are cool when –The nights are clear and the days are cloudy
• Who discovered the steam engine –James Watt
• Who invented Telephone –Graham Bell
• Who discovered X-rays –Roentgen
• Who discovered Radium –Marie Curie
• Who discovered Penicillin –Alexander Fleming
• Who discovered the cure for rabies –Louis Pasteur
• The inventor of Television is –J. L. Baird
• Phosphorus is a –Non –metal
A plant with green leaves placed in red light with apprear –Black
• Light from the sun reaches us in nearly –8 Minute
• The Common refrigerant used in domestic refrigerator is –Freon /ammonia
• A Fuse wire is characterized by –high resistance and how melting point
• Which metal is commonly used as an electromagnet –Iron
• When ice melts in the beaker of water, the level of water in the beaker with –remain the same
• The dynamo converts- electrical energy into mechanical energy
• The oil in the wick of an oil lamp rises up due to –capillary action
• The flying of birds is a proof of Newton’s –first law
• When milk is churned cream gets separated due to -centrifugal
• A red light used in traffic signal because –It has longest wavelength and can be easily noticed from a long distance
• The most convenient color combination that can be used for vehicle running day and night is –red and green
• Metals are good Conductor of electricity because –they contains free electron
• The phenomenon of total internal reflection may occur when light is passing from –glass to air
• The velocity of sound is maximum in –a solid
• The mirage is seen in the hot desert because –the density of layer of air increase with altitude
• The best conductor of heat among liquid is –mercury
• Sound of frequency below 20Hz are called –Infrasonics
• A man standing at the finish line is recording the time of a race competition by means of a stop watch. He must start the watch when –He sees flash of light coming from starting gun
• If a shell from a canon bursts in the air, the total kinetic energy –increase
• The pitch of sound is measured by its –frequency
• Alternating current is converted to direct current by a –rectifier
• When iron and wood are exposed to sunlight, the iron rod become hot quickly because of –the greater thermal conductivity of iron
• In diesel engines, ignition takes place by –Compression
• Cloudy nights are warmer because –Clouds prevent radiation of heat from the ground into the air
• A electric bulb produce a loud sound when broken because –the air rushes into partial vaccum in the bulb
• What is the approximate velocity of sound in air –800m/s.
• In deserts, clouds do not precipitate because of –low humidity.
• The ink of a pen leaks out in an aeroplane because –pressure of ink inside is more than the ambient pressure
• Coating of iron with zinc is known as –Galvanization
• A piece of rock was brought from moon to earth, then –Its weight alone changed
• Which of the following is not a primary colour –Black
• Which falls down faster in a vacuum –All with fall down at same speed in a vacuum because there will be no air resistance.
• Atmospheric pressure is measured by using an instrument call a/an –barometer
• The process of transfer of heat by matter but without actual movement of particle then selves is called –Conduction
• In an electric kettle water becomes hot by –Convection
• Tea will cool most easily in a –Metal cup
• The source of solar energy is –Nuclear fusion
• A radar that detect the presence of an enemy aircraft uses –Radio waves
• Light year is a unit of –Distance
• What is normal temp, of a human body –370 c
• A Celsius and a Fahrenheit thermometer give the same reading at a particular temp. - -400C
• In which atmospheric layer are the communication satellites located ? –Ionosphere
• In an earthen pot , cooling of water depends upon the –All the above
• A fuse wire used to –Prevent an unduly high electric current from passing through a circuit
• The nucleus of an atom consists of –Proton + electron
• What happen if water is cooled from 80C to 0C ? –its volume decrease up to 40C and then Increase
• Which of the following is a good conductor of heat but bad conductor of electricity –Mica
• A sudden fall in a barometer reading indicates –Storm
• Sound travel with a different speed in different media. In what order does the velocity of sound increase in these media ? –Air, water and iron
• Which part of the sun is visible during total solar eclipse ? –Corona
• When a pencil is partly immersed in water in a beaker and held in a slanting position, the immersed portion appears –Bent towards the water surface
• The three primary colour are –Blue, green, and red
• Which part of a camera is analogous to the retina in the human eye ? –Film
• When a person walking in bring sunlight enter a dark room, he is not able to see clearly for a little while because –the iris unable to dilate the pupil immediately
• In electric fittings, the wires are earthed because –In case of a short circuit, current passes to the earth.
• To an astronaut, the outer space appears –Black
• Which of the following metal is used in aircraft ? -Palladium
• A transformer is used to –Increase of decrease AC voltage
• The element used in an electric filament is –Tungsten
• The sky is blue in colour due to –dispersion
• When a ship floats on water –The mass of water displaced is equal to the mass of the ship