1 nanometer = ?
1.10–3 meter
2.10–6 meter
3.10–9 meter
4.10–12 meter
Posted Date:-2021-07-22 03:46:44
A camera uses a __________ to form an image.
1.convex lens
2.concave lens
3.condenser lens
4.none of these
Posted Date:-2021-07-22 03:46:44
At night, Plants intake __________ and release __________.
1.Oxygen, Carbon dioxide
2.Carbon dioxide, Oxygen
3.Oxygen, Carbon monoxide
4.Carbon monoxide, Oxygen
Posted Date:-2021-07-22 03:46:44
Biomass is converted into fuel by:
1.Fermentation
2.Reflection
3.Scattering
4.Evaporation
Posted Date:-2021-07-22 03:46:44
Blood is cleaned by
1.Lungs
2.Liver
3.Heart
4.Kidneys
Posted Date:-2021-07-22 03:46:44
CNG stands for
1.Converted Natural Gas
2.Conduced Natural Gas
3.Conducted Natural Gas
4.Compressed Natural Gas
Posted Date:-2021-07-22 03:46:44
Deficiency of Vitamin-D results in
1.night blindness
2.rickets
3.scurvy
4.hair fall
Posted Date:-2021-07-22 03:46:44
During winter in cold countries, the __________ is mixed to melt the ice on the icy roads.
1.Salt
2.Chlorine
3.Carbon dioxide
4.Water
Posted Date:-2021-07-22 03:46:44
Each day human body breathe in ________ liters of air.
1.5,000 to 10,000
2.10,000 to 15,000
3.15,000 to 20,000
4.20,000 to 25,000
Posted Date:-2021-07-22 03:46:44
For a fixed mass of gas at constant temperature, if we decrease volume, the pressure will
1.also decrease
2.increase
3.remains constant
4.none of these
Posted Date:-2021-07-22 03:46:44
GPS is an abbreviation for
1.Global Poles System
2.Global PolySiliconium Store
3.Global Positioning System
4.Global Position Structure
Posted Date:-2021-07-22 03:46:44
In a very low temperature which from the following will freeze at last?
1.River water
2.Canal water
3.Sea water
4.Water in a lake
Posted Date:-2021-07-22 03:46:44
In general, Comets have __________ orbits.
1.Elliptical
2.Highly elliptical
3.Circular
4.Parabolic
Posted Date:-2021-07-22 03:46:44
In the solar system, the Great Spot is on the planet
1.Saturn
2.Venus
3.Mars
4.Jupiter
Posted Date:-2021-07-22 03:46:44
Instrument used for measuring very high temperature is
1.Pyroscope
2.Pyrometer
3.Seismograph
4.Xylometer
Posted Date:-2021-07-22 03:46:44
Oxidation is a chemical reaction involving the
1.Gain of Electrons
2.Loss of Electrons
3.Gain of Protons
4.Loss of Protons
Posted Date:-2021-07-22 03:46:44
Pathogens contains special proteins called:
1.antigens
2.trypsin
3.lipase
4.Amylase
Posted Date:-2021-07-22 03:46:44
Radioactivity was discovered by
1.Lord Kelvin
2.J. J. Thomson
3.Ernest Rutherford
4.Henri Becquerel
Posted Date:-2021-07-22 03:46:44
Sound waves are _________ waves.
1.Transverse
2.Electromagnetic
3.Longitudinal
4.none of these
Posted Date:-2021-07-22 03:46:44
The average adult has a blood volume of about ________ liters.
1.4
2.5
3.6
4.7
Posted Date:-2021-07-22 03:46:44
The density of water is
1.1 g/cm3
2.1.5 g/cm3
3.2 g/cm3
4.none of these
Posted Date:-2021-07-22 03:46:44
The fluid part of blood is known as
1.plasma
2.platelets
3.blood cells
4.hormones
Posted Date:-2021-07-22 03:46:44
The Great Spot is a
1.Mountain
2.Desert
3.Frozen Carbon dioxide
4.Storm
Posted Date:-2021-07-22 03:46:44
The lifespan of Red Blood Cells is __________ days.
1.60
2.120
3.180
4.240
Posted Date:-2021-07-22 03:46:44
The lifespan of White Blood Cells is __________ day(s).
1.1
2.2
3.3
4.4
Posted Date:-2021-07-22 03:46:44
The most abundant element in the Earths crust is
1.Oxygen
2.Hydrogen
3.Carbon Dioxide
4.Silicon
Posted Date:-2021-07-22 03:46:44
The most abundant element in the universe is
1.Oxygen
2.Hydrogen
3.Carbon Dioxide
4.Silicon
Posted Date:-2021-07-22 03:46:44
The most densest substance on the Earth is
1.Platinum
2.Copper
3.Steel
4.Osmium
Posted Date:-2021-07-22 03:46:44
The nearest planet to the Earth is
1.Venus
2.Mercury
3.Mars
4.Moon
Posted Date:-2021-07-22 03:46:44
The planet that moves round the Sun at the highest speed is
1.Jupiter
2.Venus
3.Mars
4.Mercury
Posted Date:-2021-07-22 03:46:44
The planet which is easily visible from the Earth is
1.Mercury
2.Venus
3.Mars
4.Jupiter
Posted Date:-2021-07-22 03:46:44
The position of an element in the Periodic Table is determined by its __________ number.
1.Electron
2.Proton
3.Neutron
4.Positron
Posted Date:-2021-07-22 03:46:44
The salinity of sea water is determined by the amount of common salt (Sodium Chloride) in _______ of sea water.
1.1 gram
2.10 grams
3.1 kg
4.10 kg
Posted Date:-2021-07-22 03:46:44
The science of lightning is called
1.Aerology
2.Meteorology
3.Electeorology
4.Fulminology
Posted Date:-2021-07-22 03:46:44
The SI unit of pressure is
1.pascal
2.joule
3.tesla
4.henry
Posted Date:-2021-07-22 03:46:44
The speed of light is
1.280,000 km/s
2.300,000 km/s
3.320,000 km/s
4.none of these
Posted Date:-2021-07-22 03:46:44
The Sun is a/an
1.Star
2.Planet
3.Asteroid
4.Meteor
Posted Date:-2021-07-22 03:46:44
The Suns mass is mainly consist of hydrogen (about 73%). The second main constituent (about 25%) is
1.hydrogen
2.helium
3.carbon dioxide
4.nitrogen
Posted Date:-2021-07-22 03:46:44
Urine is produced in
1.Kidneys
2.Lungs
3.Large intestine
4.Liver
Posted Date:-2021-07-22 03:46:44
What is the original source of energy for biomass?
1.Earth
2.Moon
3.Sun
4.Star
Posted Date:-2021-07-22 03:46:44
When white light is passed through a prism, it splits into _______ colours.
1.5
2.6
3.7
4.8
Posted Date:-2021-07-22 03:46:44
Which from the following is NOT a conductor?
1.Aluminium
2.Silicon
3.Graphite
4.All are conductors
Posted Date:-2021-07-22 03:46:44
Which from the following is true for Sound?
1.Sound cannot travel through a vacuum
2.Sound cannot travel through gases
3.Sound cannot travel through liquids
4.Sound cannot travel through solids
Posted Date:-2021-07-22 03:46:44
Which of these addictive drugs are also used as painkillers?
1.Narcotics
2.Sedatives
3.Hallucinogens
4.All can be used
Posted Date:-2021-07-22 03:46:44
Which of these is an anti-viral protein?
1.Urokinase
2.Thymosin
3.Insulin
4.Interferon
Posted Date:-2021-07-22 03:46:44
X-rays were discovered by
1.Rontgen
2.Thomson
3.Rutherford
4.Bacquerel
Posted Date:-2021-07-22 03:46:44