AP Class 7 FA2 Question Paper 2023 Science

FORMATIVE ASSESSMENT - II - 2023 - 24 GENERAL SCIENCE 20 Class : VII ] (Max. Marks : 20) [ Time : 45 Mins. Name of the Student : ................................................................. Roll No. : ............ I. Answer the following questions. 4x1=4 1. Which of the following is a physical change? [ ] ÁøÏ+~ yê{Ï˝À uÛÖ‹ø£ e÷s¡TŒ @~? a) digestion b) crystallization Js¡íÁøÏj·T düŒ¤{Ïø°ø£s¡D c) neutralization d) fermentation ‘·≥d”úø£s¡D+ øÏD«q+ 2. Breathing through spiracles occurs in ____. [ ] XÊ«dü s¡+Á<Ûë\ <ë«sê XÊ«dü rdüTø√e&É+ ____ ˝À »s¡T>∑T‘·T+~. a) cockroach b) earthworm c) elephant d) fish u§~›+ø£ yêqbÕeTT @qT>∑T #˚|ü 3. When the solution is basic, phenolphthalein gives a _________ colour. Á<ëeD+ øå±s¡j·TT‘·+>± ñqï|ü&ÉT, |òæHê|üÔ©Hé _________ s¡+>∑TqT ÇdüTÔ+~. 4. The percentage of oxygen in the exhaled air is ___________. $&ç#˚ >±*˝À Äøχ»Hé XÊ‘·+ ____________. II. Answer the following questions. 2x2=4 5. Explain why burning of wood and cutting it into small pieces are considered as two different types of changes. #Óø£ÿ\qT ø±\Ã&É+ eT]j·TT #Óø£ÿ\qT ∫qï eTTø£ÿ\T>± ø£‹Ô]+#·&É+ ¬s+&ÉT $_Ûqï s¡ø±\ e÷s¡TŒ\T>± m+<äT≈£î |ü]>∑DÏ+#·ã&ÉT‘·THêïjÓ÷ $e]+#·+&ç. 6. Why the deep-sea divers carry oxygen cylinders with them? ˝À‘Ó’q düeTTÁ<ä+˝ÀìøÏ yÓfi‚flyês¡T m+<äT≈£î ‘·eT‘√ Äøχ»Hé dæ*+&És¡¢qT rdüT≈£îyÓfi¯‘ês¡T? III. Answer the following question. 1x4=4 7. Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and third is a sugar solution. How will you identify them? You have only a red litmus paper. MT≈£î eT÷&ÉT Á<äyê\T Çe«ã&ܶsTT. ˇø£{Ï ôV’≤Á&√ø√¢]ø˘ ÄeT¢+, eTs=ø£{Ï k˛&çj·T+ ôV’≤Á&ܬø‡Ì&é eT]j·TT eT÷&Ée~ #·¬øÿs¡ Á<ëeD+. MTs¡T yê{Ïì m˝≤ >∑T]ÔkÕÔs¡T ? MT <ä>∑Zs¡ mÁs¡ *≥àdt ø±–‘·+ e÷Á‘·y˚T ñ+~. [ Turn Over

2 IV. Answer the question given below. 1x8=8 8. A) What is a neutralization reaction? Write any two applications of neutralization reaction in everyday life. ‘·≥d”úø£s¡D Á|üÁøÏj·T n+fÒ @$T{Ï ? s√EyêØ J$‘·+˝À ‘·≥d”úø£s¡D Á|üÁøÏj·T jÓTTø£ÿ @yÓ’Hê ¬s+&ÉT nqTes¡ÔHê\qT Áyêj·T+&ç. (Or) B) Write a comparative note on aerobic and anaerobic respiration. yêj·TTdüVæ≤‘· eT]j·TT nyêj·TT XÊ«düÁøÏj·T\ô|’ ‘·T\Hê‘·àø£ yê´K´qT Áyêj·T+&ç.