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You Are On Multi Choice Question Bank SET 2158

107901. Which of the following is not a gaseous air pollutant?





107902. Match List I with List II and select the correct answer using the codes below A)John Dalton 1)Law of definite proportion by volume B)Joseph Proust 2)Law of multiple proportion C)Antoine Lavoisier 3)Law of definite proportion byweight D)Joseph Louis Gay Lussac 4)Law of conservation of mass A B C D





107903. Red phosphorous is used in the manufacture of safety matches.This is due to the fact that





107904. Which of the statements regarding to Portland Cement are correct? 1.Silica imparts strength to cement 2.Alumina makes cement quick setting 3.Excess of lime increases strength of cement 4.Calcium sulphate decreases initial setting time of cement Select the correct answer using the code below





107905. Which of the following gas is used in cigarette lighters ?





107906. Which of the following is produced during the formation of photochemical smog ?





107907. The metallurgical process in which a metal is obtained in a fused state is called ?





107908. Which gas is used in fire extinguishers ?





107909. The metal used to recover copper from a solution of copper sulphate is ?





107910. Which of the primary component of natural gas?





107911. Atomic number is equal to





107912. A shop keeper bought 18 Oranges for Rs.50/-If he gets 20% profit how many oranges does he sell for Rs.50/-?





107913. Which one of the following metals does not react with water to produce Hydrogen?





107914. The oxide of Nitrogen used in medicine as anaesthetic is ?





107915. Aspirin is





107916. Water drops are spherical because of ?





107917. The chemical used as a fixer in photography is ?





107918. Which is also called Stranger Gas ?





107919. Which one of the following gas is readily soluble in water at room temperature ?





107920. Which have the maximum density ?





107921. Which one of the following is the softest?





107922. pH of water is





107923. pH of blood is ?





107924. Who proposed first atomic theory ?





107925. Natural rubber is a polymer derived from ?





107926. Washing soda is ?





107927. Air contains maximum amount of





107928. Homo nuclear molecules contain ?





107929. Human bone does not contain





107930. The isotope atoms differ in ?





107931. What nucleus of atom contains ?





107932. Nail polish remover contains ?





107933. What is a mixture of potassium nitrate powdered charcoal and sulphur called?





107934. Which metal is heaviest ?





107935. Bleaching action of chlorine is by





107936. What is Calcium sulphate ?





107937. Which is used in preparation of dynamite ?





107938. Oil of vitriol is





107939. What among following is used to produce artificial rain ?





107940. The term PVC used in the plastic industry stands for





107941. Rare gases are





107942. Identify the wrong statement in the following





107943. Which acid is present in lemon ?





107944. Which is not a type of elements ?





107945. Who is regarded as father of modern chemistry ?





107946. If the mass number of an election is 16 and the atomic number is 8 then the number of nuetron is





107947. Green house gas is





107948. The ground state energy of the electron in the hydrogen atom is 13.6 eV the energy of the state n=2 is





107949. Gain of electron is





107950. What are the constituents of bronze?





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