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You Are On Question Answer Bank SET 2333
116651. Blisters are formed more rapidly by the steam of boiling water in comparision to boiling water itself because ________.?
Answer: Stream has latent heat
116652. An ice cube is floating on the surface of water: How will the water level be affected by melting of this ice cube?
Answer: Water level will remain the same
116653. What will be the effect on gravitational acceleration if the earth suddenly stops its rotation?
Answer: It will increase at the poles
116654. One Kilo Calorie heat will be equal to_____.?
Answer: 4.2 x 103 Joule
116655. Ball pen works on the principle of ______.?
Answer: Capillarity and surface tension
116656. The apparatus used in submarines to give clear view of the objects on the surface of the ocean or ground is known as________.?
Answer: Periscope
116657. Growth of the baby in the uterus is found using______.?
Answer: Ultra sound
116658. The form of matter are________.?
Answer: 3
116659. The centre of the Newton’s rings pattern is dark since_______.?
Answer: The light undergoes a phase change π
116660. A moving electric charge produces__________.?
Answer: Both electric and magnetic field
116661. Lightning conductors are made up of _________.?
Answer: Copper
116662. The I.C Chip used in a computer is made up of_______.?
Answer: Silicon
116663. Which planet is nearest to the earth?
Answer: Mars
116664. Brass gets discoloured in air because of the presence of which gas in air?
Answer: Hydrogen sulphide
116665. Which is a non metal that remains liquid at room temperature?
Answer: Bromine
116666. Chlorophyll is a naturally occurring chelate compound in which central metal is?
Answer: Magnesium
116667. Which is used in pencils?
Answer: Graphite
116668. Chemical formula for water is?
Answer: H2O
116669. The gas usually filled in the electric bulb is?
Answer: Nitrogen
116670. Washing soda is the common name for?
Answer: Sodium carbonate
116671. Quartz crystals normally used in quartz clocks etc. is chemically?
Answer: Silicon dioxide
116672. Which of the gas is not known as green house gas?
Answer: Hydrogen
116673. Bromine is a?
Answer: Red liquid
116674. The hardest substance available on earth is?
Answer: Diamond
116675. The variety of coal in which the deposit contains recognisable traces of the original plant material is?
Answer: Peat
116676. Tetraethyl lead is used as?
Answer: Petrol additive
116677. The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is?
Answer: Helium
116678. The gases used in different types of welding would include?
Answer: Oxygen and acetylene
116679. The property of a substance to absorb moisture from the air on exposure is called?
Answer: Deliquescence
116680. The average salinity of sea water is?
Answer: 3.50%
116681. When an iron nail gets rusted, iron oxide is formed?
Answer: With increase in the weight of the nail
116682. Galvanised iron sheets have a coating of?
Answer: Zinc
116683. Among the various allotropes of carbon,?
Answer: Diamond is the hardest; graphite is the softest
116684. The group of metals Fe, Co, Ni may best called as?
Answer: Transition metals
116685. Heavy water is?
Answer: Deuterium oxide
116686. The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of?
Answer: Sulphur
116687. Non stick cooking utensils are coated with?
Answer: Teflon
116688. Monazite is an ore of?
Answer: Thorium
116689. Carbon, diamond and graphite are together called?
Answer: Allotropes
116690. Potassium nitrate is used in?
Answer: Fertiliser
116691. Permanent hardness of water may be removed by the addition of?
Answer: Sodium carbonate
116692. Soda water contains?
Answer: Carbon dioxide
116693. Most soluble in water is?
Answer: Sugar
116694. Sodium metal is kept under?
Answer: Kerosene
116695. What are the ingredients of gun metal?
Answer: Copper; Tin
116696. From which mineral is radium obtained?
Answer: Pitchblende
116697. Actinides are the elements with atomic numbers from?
Answer: 89 to 103
116698. The two elements that are frequently used for making transistors are?
Answer: Silicon and germanium
116699. The filament of an electric bulb is made of?
Answer: Tungsten
116700. Diamond is an allotropic form of?
Answer: Carbon
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