Question 532 The structure of ethylene is? A) linear B) tetrahedral C) octahedral D) triangular No Details
Question 533 Group displacement law was given by? A) Bacquerel B) Rutherford C) Mendeleaf D) Soddy and Fajan No Details
Question 534 Which one of the following element is essential for construction is nuclear reactors? A) Cobalt B) Nickel C) Zirconium D) Tungsten No Details
Question 536 The atoms of the elements having same mass number but different atomic number are called? A) Isotopes B) Isobars C) Isotones D) Isomers No Details
Question 538 Out of the following which one is an example of emulsion ? A) Blood B) Milk C) Soap solution D) Air No Details
Question 539 Which of the following metals is not attacked by the environment? A) Gold B) Copper C) Silver D) Iron No Details
Question 540 The law of relative lowering of vapour pressure was given by? A) Vant Hoff B) Ostwald C) Lewis D) Raoult No Details