1031. Temporary hardness of water is due to the presence of bicarbonates of calcium and - magnesium
1032. Tetraethyl lead is used as anti knocking agent in
- petrol.
1033. The 111 element is named after Wilhelm
- Conrad Rontgen.
1034. The acid present in soybeans is
-phytic acid.
1035. The age of rocks from the moon has been estimated using the technique
- Uranium dating
1036. The area between polar circles and poles is
- Frigid Zone.
1037. The blood test that detects allergy to metals, chemicals and environmental toxins is
- MELISA(Memory Lymphocyte Immunostimulation Assay) test.
1038. The B-Programming language was developed by
- Ken Thompson.
1039.The Burton Process is used to produce
- Diesel.
1040. The chalk and blotting paper quickly absorbs ink, the brick quickly absorbs water etc. are due to
- capillarity
1041. The chemical known as 'Chinese White' is
- Zinc Oxide.
1042. The chemical substance used in blood bank is
- monosodium citrate.
1043. The chemical used as catalyst in production of sulphuric acid is
- vanadium pentoxide.
1044. The chemical used to draw and write in the glasses is
- hydrofluoric acid.
1045. The colour of a star indicates its
- temperature.
1046. The colour used in scientific laboratory for indicating danger is
- yellow.
1047. The colour which appears on the lowest portion of rainbow
- Violet
1048. The colour which appears on the upper portion of the rainbow
- Red
1049. The compounds which causes the permanent hardness of water
- Sulphates and Chlorides of calcium and Magnesium
1050. The condition of heart with increased heart beat is called
- Tachycardia.
1051. The crop which absorbs ammonia directly is
- paddy.
1052. The device used to measure the boiling point of a liquid is
- Hypsometer.
1053. The difference in time between two places 1° longitude apart is
- 4 minutes.
1054. The disease known as Jail fever is
- Typhus.
1055. The dual nature of electron was proposed by
- Louis De Broglie
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