Question 13 MarksDerive the formula of equivalent resistance for series combination of resistors.Answerસ્વપ્રયત્નView full question & answer→
Question 23 Markswith a neat labelled ray diagram. Describe the position and nature of the image formed when an extended object is kept between $F_{1}$ and $2F_{1}$ in front of a convex lens.Answerસ્વપ્રયત્નView full question & answer→
Question 33 MarksExplain the phenomenon of refraction by a rectangular glass slab. Answerસ્વપ્રયત્નView full question & answer→
Question 43 MarksDescribe the methods to control humanpopulation.Answerસ્વપ્રયત્નView full question & answer→
Question 53 MarksExplain asexual reproduction by binary fission method with diagram.Answerસ્વપ્રયત્નView full question & answer→
Question 63 MarksWhat is reflex action? Give examples of reflex action. How do involutary actions and reflex actions differ from each other?Answerસ્વપ્રયત્નView full question & answer→
Question 73 MarksExplain the extraction of metals lyingat the middle of the activity series.Answerસ્વપ્રયત્નView full question & answer→
Question 83 MarksWrite the points of difference between metals and non-metals on chemical properties. basis of chemical properties. Answerસ્વપ્રયત્નView full question & answer→
Question 93 MarksWhat is called displacement reaction ? Explain with example.Answerસ્વપ્રયત્નView full question & answer→