Ques. No. 2

Ques. No. 2 Challengers* Inexh tubesA.& of water was filled, Clean placed in test tube clean was put in test tube B. silver was placed in tube C and a clean copFr wire placed in test which of the following option wate correct aboul Zinc is more reactive than aluminium (b' Copper more reacuve than aluminium Zinc is more than copper Zine Iron. silver and copper are less reacti\e than 2 On the basis Of the sequence of the given reactions uentify the most and least reactne elements. 6 A student puts one big iron nail each in 7 8 X and Z Z and X (b) YandZ ZandY eonlaining solutions zinc sulphate, alumin• sulphate, copper sulphate and iron sulphate. A observed only on nail was put in the solution of (b) iron sulphate (a) zinc sulphate (c) copper sulphate (d) aluminium Which of the following reactions not occur? CuSO.1aq1+ Ag,SOg Hydrogen gas is not widely used as a (a hydrogen decomposes to atomic Jt temperature (b) risk of explosion with water hydrogen isomerises to orthohydrognü temperature. (d) many metals form hydrides at lower Alloys are homogeneous mixtures Of a metal With metal Or non-metal. Which among the contain non-metal as one of its constituents? 3 A metal M has electronic configuration 2.8.3 and occurs incarth•scrustand oxide MP, is more reactive than zinc. Which of the folimving options isJare metal M is iron lb) The metal M i. lead The ore which metal M i' extracted m haematite (d) metal M is extracted is bauxite. 4 Metal M tents with form oxide MO oxide moisture and carbon dioxide of the atmospiwre to form • basic carbona'e metal M Tbc metal ' M' cu 5 b sulphate. silver nitrate Copper are added each beaker Blue colour Will appear (a) Brass (c) Amalgam (b Bronze (d) Steel F is an clement that's ore is rich in E,Os. is affected by water Jt forms two chlorides, The E is copper (c) aluminium (b) zinc (d) iron Answer For Challenger Solutions Visit bt1n3//uno_e/fQrt4Rd OR Scan the Code 5 •n case of beaker C (d) the beakers. mW mo. not Oeu&.ea •n exominotioh, hove been