931. The element stored in oil due to its high reactivity
– Barium
932. The element which has the highest reactivity or electronegativity
– Fluorine
933. The element which has the highest ionization potential
– Helium.
934. The element which has the least ionization energy
– francium.
935. The element with the highest melting point
-carbon.
936. The elements with the most number of isotopes
– tin.
937. The escape velocity of moon is
– 2.4 km/s -Earth – 11.2 km/s (7 miles/s. )(Jupiter: 59.6km/s)
938. The first portable computer
– Osborne-I
939. A tachometer is a device to measure
– speed of rotation.
940. A vehicle silencer works on the principle of’ Destructive Interference’ of
– sound waves
941. Alkaloids are a group of nitrogen-containing organic compounds produced by
– plants
942. The alloy used for making permanent magnet is
– Alnico.
943. An active galactic nucleus is called a
– quasar.
944. Animals living in the bottom of water are called
– benthic animals.
945. Approximately 111 Km is represented by
1⁰ latitude.
946. Average human respiratory rate
– 16-20 breaths/min
947. Average respiratory rate in a newborn baby
– 44 breaths/min
948. —————– is observed on October 23, from 6.023 am to 6.023 pm
– Avogadro day
949. ……………….. is the unit of radioactive decay.
– Becquerel
950. ……………….. is a mixture of an alkaline solution of Copper sulphate and Sodium citrate.
– Benedict’s solution
951. Bismuth Aurite is the mineral of
– gold.
952. The blue colour of the Sea was explained by
– Sir. C. V. Raman
953. The blue colour of the sky was explained by
– Lord Rayleigh
954. Bosons which carry the strong nuclear force
– Gluons
955. Bright’s disease affects
– kidney.
956. …………………. prevent the changes in ph caused by the addition of acid or alkali.
– Buffer solution
957. ……………………. is the upward force which acts on a body immersed in liquid.
– Buoyant force
958. Calomel
-Mercurous chloride
959.Candy fluid Potassium
– Permanganate.
960. ………………… is the working principle behind the washing machine.
– Centrifugation
961. Chemical decomposition by the action of heat is known as
– Pyrolysis
962. The chemical name of vitamin B5 is Pantothenic acid and vitamin C is
– Ascorbic acid.
963. The compound of sodium used as a purifier in submarines
– Sodium Peroxide
964. Desert sand is usually composed of
– calcite.
965. Diamond is the hardest form of carbon and lamp black is the softest form of
– carbon.