Question 11 MarkFor solar cooker…………. mirror is the most appropriate.(plane. convex, concave) Answerસ્વપ્રયત્નView full question & answer→
Question 21 MarkThe image of an object formed by……………is aways virtual. (concave lens. concave mirror) Answerસ્વપ્રયત્નView full question & answer→
Question 31 Mark………….part of the flower becomes mature and modified into fruit. (Ovule. Ovary. Carpel)Answerસ્વપ્રયત્નView full question & answer→
Question 41 MarkIn xylem, the pull arised by ……….for upward transportation of water is the main suction force. (photosynthesis.transpiration, transportation)Answerસ્વપ્રયત્નView full question & answer→
Question 51 MarkThe valency of magnesium is……….. $(2. 3. 4)$Answerસ્વપ્રયત્નView full question & answer→
Question 61 Mark…………is formed by the reaction of ethanoic acid with ethanol in presence of $H_{2}HO_{4}$ (Soap. Ester. Ethanall )Answerસ્વપ્રયત્નView full question & answer→