786. The Solvay Process or Ammonia - Soda Process is the major industrial process for the production of ? Sodium Carbonate
787. Which element's isotope has the longest ever half-life period?
Bismuth (Bismuth-209)
788. Which scientific instrument is used to detect Dark Matter?
Scintillating Bolometer
789. Name the soil type which is rich in iron & aluminium, formed in hot and wet tropical areas?
Laterite
790. One of the important ore of which metal is Gibbsite?
Aluminium
791. Which element has the largest number of stable isotopes?
Tin (10)
792. Which metal's major mineral is celestine?
Strontium
793. The Cumene Process or Hock process is used for synthesizing.............
Phenol
794. The natural diamonds are classified into four types according to the presence of in their crystals?
Nitrogen
795. The topographical features of creatures of which planet are named after Beethoven, Milton, Mozart, Ibsen and Kurosawa?
Mercury
796. Which chemical compound is also known in the names of 'Chameleon mineral & Condy's crystals'?
Potassium permanganate
797. The Bomb calorimeter is used to measure of a particular reaction?
Heat of combustion
798. E- numbers are codes for chemicals which can be used as ?
Food additives
799. Which chemical has the nickname of'Mosaic Gold'?
Tin sulfide
800. What is considered as the most abundant organic compound on Earth Surface?
Cellulose
801. Bowieite and rhodplumsite are the minerals of which metal?
Rhodium
802. Which is the only metal to be named after an asteroid?
Palladium
803. Which is the most electronegative element?
Fluorine
804. What is known as the 'Universal Fibre'?
Cotton
805. Which metal is produced through the Hall-Heroult process?
Aluminium
806. Which chemical is used in the treatment of cyanide poisoning?
Sodium thiosulfate
807. The speed of a missile is mentioned in the unit of
Mach
808. Which chemical is known as 'Epsom Salt'?
Magnesium Sulfate
809. The ability of a substance to attract and hold water molecules from the surrounding environment is known as-------------------.
Hygroscopy
810. Which constellation has the most stars that can be seen with naked eye?
Centaurus
811. Who is the only scientist to lead India's both Antarctic and Arctic expedition teams?
Dr. Rasik Ravindra
812. Which element has the highest melting point?
Carbon
813. Which device is used to convert sound waves into electric waves?
Microphone
814. Which technique is used to transmit audio signals in television broadcast?
Frequency modulation
815. Which element is used to coat the photocopying drum of Xerox machine?
Selenium
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