Question 11 MarkDuring formation of positively charged ion, atom of metal ………….. .AnswerDuring formation of positively charged ion, atom of metal lose electrons.View full question & answer→
Question 21 MarkNon-metals form ………. ions by gain of electrons.AnswerNon-metals form negative ions by gain of electrons.View full question & answer→
Question 31 MarkIodine and ……………. are the two non – metals having typical metallic lustre.AnswerIodine and diamond are the two non¬metals having typical metallic lustre.View full question & answer→
Question 41 MarkSome element can be hammered into thin sheets. This property is called …………….. .AnswerSome element can be hammered into thin sheets. This property is called malleability.View full question & answer→
Question 51 MarkNon-metals form ………….. oxides.AnswerNon-metals form acidic oxides.View full question & answer→
Question 61 MarkNon-metals are ………… conductors of heat and electricity.AnswerNon-metals are bad conductors of heat and electricity.View full question & answer→
Question 71 MarkTo prepare ornaments ………… carat gold is used.AnswerTo prepare ornaments 22 carat gold is used.View full question & answer→
Question 81 Mark…………….. is used in medicines.AnswerSilver is used in medicines.View full question & answer→
Question 91 MarkThe stainless steel utensils used at home are made of an alloy of iron with carbon, …………… and ……….. .AnswerThe stainless steel utensils used at home are made of an alloy of iron with carbon, nickel and chromium.View full question & answer→
Question 101 MarkGold of 100% purity is …………… carat gold.AnswerGold of 100% purity is 24 carat gold.View full question & answer→