Question 11 MarkGive one example for the following types of mixtures : liquid$-$gas homogenous mixtureAnswerLiquid-gas homogenous mixture — AirView full question & answer→
Question 21 MarkGive one example for the following types of mixtures : misicible liquidsAnswerMisicible liquids — water and ethanol.View full question & answer→
Question 31 MarkGive one example for the following types of mixtures : solid$-$liquid heterogenous mixture.AnswerSolid$-$liquid heterogenous mixture — sand and water, mud and water, sugar and oil.View full question & answer→
Question 41 MarkGive one example for the following type of mixtures. solid$-$solid homogenous mixture.AnswerSolid-solid homogenous mixture — Alloys of metals e.g. brass, bronze stainless steel etc.View full question & answer→
Question 61 MarkName: the Hardest Naturally Occurring SubstanceAnswerDiamondView full question & answer→
Question 81 MarkName : a Non$-$metal Which is a Good Conductor of Electricity.AnswerGraphiteView full question & answer→
Question 91 MarkName: a Metal Which is a Poor Conductor of Electricity.AnswerTungstenView full question & answer→
Question 141 MarkWrite the Chemical Name of the Following and Also Give Their Molecular Formulae : SandAnswerSilicon dioxide $($Sand$) — SiO_2$View full question & answer→
Question 151 MarkWrite the Chemical Name of the Following and Also Give Their Molecular Formulae: MarbleAnswerCalcium carbonate $($Marble$) — CaCO_3$View full question & answer→
Question 161 MarkWrite the Chemical Name of the Following and Also Give Their Molecular Formulae : VinegarAnswerAcetic acid $($Vinegar$) — CH_3COOH$View full question & answer→
Question 171 MarkWrite the Chemical Name of the Following and Also Give Their Molecular Formulae: Baking SodaAnswerSodium bicarbonate $($Baking soda$) — NaHCO_3$View full question & answer→
Question 181 MarkGive Two Examples for Each of the Following: Inert GasesAnswerHelium, argon, neon.View full question & answer→
Question 191 MarkGive Two Examples for Each of the Following: MetalloidsAnswerAntimony, silicon, boron.View full question & answer→
Question 201 MarkGive Two Examples for Each of the Following: Non$-$metalsAnswerCarbon, sulphur, oxygen.View full question & answer→
Question 211 MarkGive two examples for the following: MetalsAnswerIron, silver, gold.View full question & answer→
Question 221 MarkDefine: ElementsAnswerElement is a substance which cannot be broken further into simpler substances and has a definite set of properties. Elements are made up of only one kind of atoms.View full question & answer→