General Science: Questions and Answers
(Chapter: 21)
656. Which chemical property of an element is described by the Pauling scale?
Electronegativity
657. What is the full form of the LED?
Light Emitting Diode
658. Which metal is used in the catalytic converters in cars to reduce the pollution from exhaust gases?
Platinum
659. Bertrandite & phenakite are the minerals of?
Beryllium
660. Which layer of the atmosphere is the 'meteor region'?
Mesosphere
661. Which is the second most abundant salt in seawater?
Magnesium chloride
662. The Solvay Process or Ammonia - Soda Process is the major industrial process for the production of?
Sodium Carbonate
663. Which element's isotope has the longest ever half-life period?
Bismuth (Bismuth-209)
664. Which scientific instrument is used to detect Dark Matter?
Scintillating Bolometer
665. Name the soil type which is rich in iron & aluminium, formed in hot and wet tropical areas?
Laterite
666. One of the important ore of which metal is Gibbsite?
Aluminium
667. Which element has the largest number of stable isotopes?
Tin (10)
668. Which metal's major mineral is celestine?
Strontium
669. The Cumene Process or Hock process is used for synthesizing.............
Phenol
670. The natural diamonds are classified into four types according to the presence of in their crystals?
Nitrogen
671. The topographical features of creatures of which planet are named after Beethoven, Milton, Mozart, Ibsen and Kurosawa?
Mercury
672. Which chemical compound is also known in the names of 'Chameleon mineral & Condy's crystals'?
Potassium permanganate
673. The Bomb calorimeter is used to measure a particular reaction?
Heat of combustion
674. E- numbers are codes for chemicals which can be used as?
Food additives
675. Which chemical has the nick¬name of'Mosaic Gold'?
Tin sulfide
676. What is considered as the most abundant organic com¬pound on Earth Surface?
Cellulose
677. Bowieite and rhodplumsite are the minerals of which metal?
Rhodium
678. Which is the only metal to be named after an asteroid?
Palladium
679. Which is the most electroneg¬ative element?
Fluorine
680. What is known as the 'Universal Fibre'?
Cotton
681. Which metal is produced through the Hall-Heroult process?
Aluminium
682. Which chemical is used in the treatment of cyanide poison¬ing?
Sodium thiosulfate
683. The speed of a missile is mentioned in the unit of
Mach
684. Which chemical is known as 'Epsom Salt'?
Magnesium Sulfate
685. The ability of a substance to attract and hold water molecules from the surrounding environment is known as-------------------.
Hygroscopy
686. Which constellation has the most stars that can be seen with the naked eye?
Centaurus
687. Who is the only scientist to lead India's both Antarctic and Arctic expedition teams?
Dr Rasik Ravindra
688. Which element has the highest melting point?
Carbon
689. Which device is used to convert sound waves into electric waves?
Microphone
690. Which technique is used to transmit audio signals in television broadcast?
Frequency modulation
(Chapter: 21)
656. Which chemical property of an element is described by the Pauling scale?
Electronegativity
657. What is the full form of the LED?
Light Emitting Diode
658. Which metal is used in the catalytic converters in cars to reduce the pollution from exhaust gases?
Platinum
659. Bertrandite & phenakite are the minerals of?
Beryllium
660. Which layer of the atmosphere is the 'meteor region'?
Mesosphere
661. Which is the second most abundant salt in seawater?
Magnesium chloride
662. The Solvay Process or Ammonia - Soda Process is the major industrial process for the production of?
Sodium Carbonate
663. Which element's isotope has the longest ever half-life period?
Bismuth (Bismuth-209)
664. Which scientific instrument is used to detect Dark Matter?
Scintillating Bolometer
665. Name the soil type which is rich in iron & aluminium, formed in hot and wet tropical areas?
Laterite
666. One of the important ore of which metal is Gibbsite?
Aluminium
667. Which element has the largest number of stable isotopes?
Tin (10)
668. Which metal's major mineral is celestine?
Strontium
669. The Cumene Process or Hock process is used for synthesizing.............
Phenol
670. The natural diamonds are classified into four types according to the presence of in their crystals?
Nitrogen
671. The topographical features of creatures of which planet are named after Beethoven, Milton, Mozart, Ibsen and Kurosawa?
Mercury
672. Which chemical compound is also known in the names of 'Chameleon mineral & Condy's crystals'?
Potassium permanganate
673. The Bomb calorimeter is used to measure a particular reaction?
Heat of combustion
674. E- numbers are codes for chemicals which can be used as?
Food additives
675. Which chemical has the nick¬name of'Mosaic Gold'?
Tin sulfide
676. What is considered as the most abundant organic com¬pound on Earth Surface?
Cellulose
677. Bowieite and rhodplumsite are the minerals of which metal?
Rhodium
678. Which is the only metal to be named after an asteroid?
Palladium
679. Which is the most electroneg¬ative element?
Fluorine
680. What is known as the 'Universal Fibre'?
Cotton
681. Which metal is produced through the Hall-Heroult process?
Aluminium
682. Which chemical is used in the treatment of cyanide poison¬ing?
Sodium thiosulfate
683. The speed of a missile is mentioned in the unit of
Mach
684. Which chemical is known as 'Epsom Salt'?
Magnesium Sulfate
685. The ability of a substance to attract and hold water molecules from the surrounding environment is known as-------------------.
Hygroscopy
686. Which constellation has the most stars that can be seen with the naked eye?
Centaurus
687. Who is the only scientist to lead India's both Antarctic and Arctic expedition teams?
Dr Rasik Ravindra
688. Which element has the highest melting point?
Carbon
689. Which device is used to convert sound waves into electric waves?
Microphone
690. Which technique is used to transmit audio signals in television broadcast?
Frequency modulation
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