901. Summer sleep of animals is known as
– aestivation.
902. ‘The true sign of intelligence is not knowledge but imagination’
– Albert Einstein.
903. The temperature in the human body is controlled by
– hypothalamus.
904. The temperature which shows the same measurement in Celsius and Fahrenheit scale is
-40.
905. The temperature which shows the same measurement in Fahrenheit and Kelvin scale is
– 574.25.
906. Temporary hardness of water is due to the presence of bicarbonates of calcium and
– magnesium
907. Tetraethyl lead is used as anti¬ knocking agent in
– petrol.
908. The 111 elements is named after Wilhelm
– Conrad Rontgen.
909. The acid present in soybeans is
-phytic acid.
910. The age of rocks from the moon has been estimated using the technique
– Uranium dating
911. The area between polar circles and poles is
– Frigid Zone.
912. The blood test that detects allergy to metals, chemicals and environmental toxins is
– MELISA(Memory¬ Lymphocyte Immunostimulation Assay) test.
913. The B-Programming language was developed by
– Ken Thompson.
914. The Burton Process is used to produce
– Diesel.
915. The chalk and blotting paper quickly absorbs ink, the brick quickly absorbs water etc. are due to
– capillarity
916. The chemical known as ‘Chinese White’ is
– Zinc Oxide.
917. The chemical substance used in blood bank is
– monosodium citrate.
918. The chemical used as a catalyst in the production of sulphuric acid is
– vanadium pentoxide.
919. The chemical used to draw and write in the glasses is
– hydrofluoric acid.
920. The colour of a star indicates its
– temperature.
921. The colour used in a scientific laboratory for indicating danger is
– yellow.
922. The colour which appears on the lowest portion of a rainbow
– Violet
923. The colour which appears on the upper portion of the rainbow
– Red
924. The compounds which cause the permanent hardness of water
– Sulphates and Chlorides of calcium and Magnesium
– Tachycardia.
926. The crop which absorbs ammonia directly is
– paddy.
927. The device used to measure the boiling point of a liquid is
– Hypsometer.
928. The difference in time between two places 1° longitude apart is
– 4 minutes.
929. The disease known as Jail fever is
– Typhus.
930. The dual nature of the electron was proposed by
– Louis De Broglie