MCQOPTIONS
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MCQOPTIONS
This section includes 6820 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 1951. |
What is the particle present in the nucleus of an atom? |
| A. | proton and electron |
| B. | neutrons and electrons |
| C. | protons and neutrons |
| D. | protons, neutrons and electrons |
| Answer» D. protons, neutrons and electrons | |
| 1952. |
1 MWh is equal to? |
| A. | 6x10³ joules |
| B. | 6x10⁴ joules |
| C. | 6x10⁷ joules |
| D. | 6x10⁹ joules |
| Answer» E. | |
| 1953. |
What is the mass of an electron in MeV? |
| A. | 1 . 02 MeV |
| B. | 1 . 02 MeV © |
| C. | 51 MeV |
| D. | 102 MeV |
| Answer» C. 51 MeV | |
| 1954. |
What is the value of 1 kcal of heat? |
| A. | 2 joules |
| B. | 2x10⁴ joules |
| C. | 2x10³ joules |
| D. | 2x10⁵ joules |
| Answer» D. 2x10⁵ joules | |
| 1955. |
1 joule is equal to? |
| A. | 10³ ergs |
| B. | 10⁵ ergs |
| C. | 10⁷ ergs |
| D. | 10¹¹ ergs |
| Answer» D. 10¹¹ ergs | |
| 1956. |
in one horse power? |
| A. | 200 w |
| B. | 500 w |
| C. | 700 w |
| D. | 746 w |
| Answer» E. | |
| 1957. |
What is the distance in a light year? |
| A. | 3x10⁸ km |
| B. | 9. 46x10¹⁰ km |
| C. | 9. 46x10¹² km |
| D. | 9. 46x10¹⁵ km |
| Answer» D. 9. 46x10¹⁵ km | |
| 1958. |
1 feather is equal to? |
| A. | 1 . 61km |
| B. | 1 . 65 km |
| C. | 1 . 80km |
| D. | 1 . 85km |
| Answer» D. 1 . 85km | |
| 1959. |
What happens in a nano second? |
| A. | 10⁻⁶s |
| B. | 10⁻12S |
| C. | 10⁻³S |
| D. | 10⁻⁹S |
| Answer» E. | |
| 1960. |
How does platinum perform in the hydrogenation of oils? |
| A. | of enzymes |
| B. | degenerative |
| C. | of catalyst |
| D. | all of the above |
| Answer» D. all of the above | |
| 1961. |
What is one micron equal to? |
| A. | 100 mm |
| B. | 1000 mm |
| C. | 0 . 01 mm |
| D. | 0 . 001 mm |
| Answer» E. | |
| 1962. |
1 mile equals? |
| A. | 1 . 61km |
| B. | 1 . 65km |
| C. | 1 . 75km |
| D. | 1 . 80km |
| Answer» B. 1 . 65km | |
| 1963. |
One nanometer is equal to? |
| A. | 10⁻⁹cm |
| B. | 10⁻⁷cm |
| C. | 10⁹cm |
| D. | 10⁻⁶cm |
| Answer» C. 10⁹cm | |
| 1964. |
What does 1 kilometer distance mean? |
| A. | 100m |
| B. | 1000 cm |
| C. | 1000m |
| D. | 100 cm |
| Answer» D. 100 cm | |
| 1965. |
1 nautical mile equals? |
| A. | 1 . 61 km |
| B. | 1 . 80 km |
| C. | 1 . 85 km |
| D. | 2 . 58 km |
| Answer» D. 2 . 58 km | |
| 1966. |
One picogram is equal to? |
| A. | 10⁻⁶g |
| B. | 10⁻⁹g |
| C. | 10⁻¹²g |
| D. | 10⁻¹⁵g |
| Answer» D. 10⁻¹⁵g | |
| 1967. |
Energy change in dynamo? |
| A. | from mechanical energy to electrical energy |
| B. | from heat energy to electrical energy |
| C. | from potential energy to kinetic energy |
| D. | none of the above |
| Answer» B. from heat energy to electrical energy | |
| 1968. |
How many liters is the volume of 1 gram molecule of a gas at normal temperature and pressure? |
| A. | 11 . 2 |
| B. | 22 . 4 |
| C. | 42 . 4 |
| D. | 224 |
| Answer» C. 42 . 4 | |
| 1969. |
A light year is closest to which of these? |
| A. | 10⁸m |
| B. | 10¹²m |
| C. | 10¹⁵m |
| D. | 10¹⁸m |
| Answer» D. 10¹⁸m | |
| 1970. |
A barrel of oil is approximately equal to what? |
| A. | 131 liters |
| B. | 159 liters |
| C. | 257 liters |
| D. | 321 liters |
| Answer» C. 257 liters | |
| 1971. |
What is the weight of one kilogram amount? |
| A. | 1 newton |
| B. | 10 newton |
| C. | 9.8 Newton |
| D. | 9 newton |
| Answer» D. 9 newton | |
| 1972. |
What is a carburetor used for? |
| A. | supplying petrol to the engine |
| B. | mixing air with petrol |
| C. | purifying petrol |
| D. | purify the air |
| Answer» C. purifying petrol | |
| 1973. |
Rectifier is used? |
| A. | to convert high voltage to high voltage |
| B. | to convert low voltage to high voltage |
| C. | To convert DC to AC |
| D. | To convert AC to DC |
| Answer» E. | |
| 1974. |
1 astronomical unit average is equal to? |
| A. | distance between earth and sun |
| B. | distance between earth and moon |
| C. | Jupiter and the Sun's distance |
| D. | distance of venus and sun |
| Answer» B. distance between earth and moon | |
| 1975. |
equals once? |
| A. | 10⁻⁵Pa |
| B. | 10⁷Pa |
| C. | 10⁵Pa |
| D. | 10⁴Pa |
| Answer» D. 10⁴Pa | |
| 1976. |
Cyclotron is one such device, which . . . |
| A. | Provides energy to charged particles. |
| B. | Measures the speed of vehicles. |
| C. | Takes a two dimensional picture. |
| D. | Determines the amount of water vapor. |
| Answer» B. Measures the speed of vehicles. | |
| 1977. |
What is the value of Planck's constant? |
| A. | 6. 66X10⁻¹¹ joule second |
| B. | 6. 63X10⁻³⁴ joule second |
| C. | 6. 02X10⁻²⁷ joule second |
| D. | 6. 67X10⁻³¹ joule second |
| Answer» C. 6. 02X10⁻²⁷ joule second | |
| 1978. |
Whose oxide is heavy water? |
| A. | of germanium |
| B. | deuterium |
| C. | of mercury |
| D. | of uranium |
| Answer» C. of mercury | |
| 1979. |
Which of the following device converts alternating current into vector current? |
| A. | transformer |
| B. | Rectifier |
| C. | alternator |
| D. | Condenser |
| Answer» C. alternator | |
| 1980. |
Radar is used? |
| A. | detecting objects by light waves |
| B. | detecting objects by reflecting sound waves |
| C. | To find the position of objects by radio waves |
| D. | chasing rain clouds |
| Answer» D. chasing rain clouds | |
| 1981. |
When we touch the leaves of the Mimosa plant, the leaves close, what is this motion called? |
| A. | photosensitive speed |
| B. | sniper speed |
| C. | vibratory speed |
| D. | chemistry reductive speed |
| Answer» D. chemistry reductive speed | |
| 1982. |
What is meant by tachyon? |
| A. | particles traveling faster than the speed of light |
| B. | part of a molecule with a heavy nucleus |
| C. | particles moving faster than the speed of sound in air |
| D. | amount of lattice vibration |
| Answer» B. part of a molecule with a heavy nucleus | |
| 1983. |
Is ampicillin a medicine? |
| A. | anticancer |
| B. | Antibiotics |
| C. | Sleepy |
| D. | Painkillers |
| Answer» C. Sleepy | |
| 1984. |
What is the chemical name of heroin? |
| A. | morphine diacetate |
| B. | Morphine Mono Acetate |
| C. | morphine dibenzoate |
| D. | Morphine Monobenzoate |
| Answer» B. Morphine Mono Acetate | |
| 1985. |
What is the beak made of? |
| A. | Cheek |
| B. | jaw |
| C. | Teeth |
| D. | No one |
| Answer» C. Teeth | |
| 1986. |
Which metal is present in hemoglobin? |
| A. | magnesium |
| B. | Iron |
| C. | calcium |
| D. | cobalt |
| Answer» C. calcium | |
| 1987. |
Who had the concept of tissue culture? |
| A. | half meter |
| B. | Hunstein |
| C. | haber landt |
| D. | hanning |
| Answer» D. hanning | |
| 1988. |
Which one of the following is not a physical change? |
| A. | dissolution of water in salt |
| B. | the formation of water vapor at the boiling point of water |
| C. | Water formation at the melting point of ice |
| D. | combustion of liquefied petroleum gas |
| Answer» E. | |
| 1989. |
Calamine is an ore of which metal? |
| A. | Such as |
| B. | Iron |
| C. | copper |
| D. | Gold |
| Answer» B. Iron | |
| 1990. |
Which of the following is an artificial sugar? |
| A. | novestral |
| B. | aspartame |
| C. | terpinol |
| D. | chloroxynol |
| Answer» C. terpinol | |
| 1991. |
On what principle does pressure cooker work? |
| A. | raising the boiling point of water by the application of pressure |
| B. | further softening of grain by application of pressure |
| C. | further softening of grains by application of pressure and heat |
| D. | steaming grain |
| Answer» B. further softening of grain by application of pressure | |
| 1992. |
Bleaching powder is a compound, its formula is? |
| A. | CaClO₂ |
| B. | CaClO |
| C. | CaOCl₂ |
| D. | CaCl₂ |
| Answer» D. CaCl₂ | |
| 1993. |
When the sugar rises from the yeast chamber, the gas is released? |
| A. | oxygen |
| B. | carbon dioxide |
| C. | hydrogen |
| D. | carbon monoxide |
| Answer» C. hydrogen | |
| 1994. |
What is used for non stick surfaces in utensils? |
| A. | Terylene |
| B. | decran |
| C. | teflon |
| D. | Freon |
| Answer» D. Freon | |
| 1995. |
Why do leaves look green? |
| A. | reflect all characters |
| B. | Reflection of green color and absorption of remaining colors |
| C. | leaves have no effect on light |
| D. | Absorption of green foliage only |
| Answer» C. leaves have no effect on light | |
| 1996. |
Why does ice float in water? |
| A. | ice is filled with air |
| B. | ice is less dense than water |
| C. | water is deeper than ice |
| D. | ice is more dense than water |
| Answer» C. water is deeper than ice | |
| 1997. |
What organic acid is present in vinegar? |
| A. | methonic acid |
| B. | ethonic acid |
| C. | oxalic acid |
| D. | basic acid |
| Answer» C. oxalic acid | |
| 1998. |
A liquid containing soluble impurities is purified by? |
| A. | filtering |
| B. | by cooling |
| C. | by depositing |
| D. | by boiling |
| Answer» E. | |
| 1999. |
Which non-metal is a conductor of electric current? |
| A. | graphite |
| B. | hydrogen |
| C. | oxygen |
| D. | Sulphur |
| Answer» B. hydrogen | |
| 2000. |
The reason for being Bodri? |
| A. | from microbes |
| B. | from fungus |
| C. | toxically |
| D. | from algae |
| Answer» D. from algae | |