Question 12 MarksHow can you contribute conservation of our natural resources ?Answerસ્વપ્રયત્નView full question & answer→
Question 22 MarksSuggest four steps to control carbon dioxide in the atmosphere.Answerસ્વપ્રયત્નView full question & answer→
Question 42 MarksExplain the role of decomposers in an ecosystem.Answerસ્વપ્રયત્નView full question & answer→
Question 52 MarksWhy do two magnetic field lines not intersect each other?Answerસ્વપ્રયત્નView full question & answer→
Question 62 MarksWhy are coils of electric toasters and electric irons made of an alloy nichrome rather than a pure metal?Answerસ્વપ્રયત્નView full question & answer→
Question 72 MarksDefine electric current. Explain the difference between electron current and conventional current.Answerસ્વપ્રયત્નView full question & answer→
Question 82 MarksGive scientific reason: Characteristics are under the control of genesAnswerસ્વપ્રયત્નView full question & answer→
Question 92 MarksGive two points of differences: Asexual reproduction and Sexual reproduction Answerસ્વપ્રયત્નView full question & answer→
Question 102 MarksWhich criteria did Mendeleev keep in mind for creating his periodic table? Answerસ્વપ્રયત્નView full question & answer→
Question 112 MarksWrite any two limitations of Dobereiner classification.Answerસ્વપ્રયત્નView full question & answer→
Question 122 MarksState any four physical properties of metals.Answerસ્વપ્રયત્નView full question & answer→
Question 132 MarksWrite the meantut of salt-family. Give two examples of sodium salt, chloride wall and magnesium salt.Answerસ્વપ્રયત્નView full question & answer→