Sinaye Academy Gener I Science Grade 8 work sheet2 CHOOSE THE . CORREC T ANSWER FROM THE GIVEN ALETERNATIVE 1. The co mpoun id that contains only carbon an d hydrogen atoms is: A.Hydrocarbon B. Organic compound C. Inorganic compound D. Salt Arrivato our he following is NOT hydrocarbon? C. Alkene D. Alkyne A.Oxide B. Alkane 3. Which of the following is the general formula of alkyne? B. C_(n)H_(2n) C_(n)H_(2n-2) D. C_(n)H_(2n-4) 4. The binary compound that ontains oxygel and any other element is: A. Acid B. Base at courals D. Salt 5.Whic h of the following is organic compound? C. Hydrocarbon D. Oxide A. Acid B. Base 6.Whic of the following is meta lic oxide? B. CO_(2) D. H_(2)O C. NO_(2) A Na_(2)O D. acid anhydride 7, The binary compo und tha t contair is oxygen an d metalli element is: A.Non metallic oxide B. Metallic oxide C.ac dic oxide 3. Acid anhydrid react with water to form: C. base D. only salt B. Acid 8. Acid anhydride 9.The comp ound that relax ne hydro xide ion whe dissolved in water is: D. Oxide B. Base C. Salt A. Acid 10. Which o the following is NOT the com mon laboratory acid? NH_(4)OH B. HCl commo H_(2)SO_(4) D. HNO_(3) A 11.The compound tha t neutralize ac ids to form salt and A. Base B. Salt C. Oxide 12.The compounds that con ains pos ive ion derived from Bicarbonate and negative ions derived from the acids are called: B organic compound C. inorgani c compound D. Salts 14. Which the the following is t C. COmpola of the first organ compound (urea)? NH_(4)CNO AgCNO A. Carbonates D. (NH_(2))_(2)CO NH_(4)Cl A C. Their PH value is greater than seven B. f th e followin is corr ect about acids? A.They have bitter taste. B.They have sour taste D. Distillation 16 Ac ids react our taste se to produce salt and water.This proces s is called: B. Sublimati e salt D.position A.Neutralization one of the : following ation C. Departion of biologic biologicanal fat 18 The formula o falkane alkene an alkyne with tv vo carbol moms respectively are; A Octane B. Formalin E. Ethanol C_(2)H_(2),C_(2)H_(4)& C_(2)H_(2) D C_(2)H_(16)C_(2)H_(6)& C_(6)H_(12) C_(2)H_(1),C_(2)H_(4)& C_(2)H_(2) the com ect formul of pentyne? D. C_(5)H_(14) A C_(5)H_(8) B. C_(5)H_(10) C. C_(5)H_(12) 20.Which of the following is correc about the bases? C. Bases do not neutralize acids. A.They have the PH value less than seven. B.They have bitter taste. .... D. Bases do no t change the color 21.Which of the wing wing is the term refers to all compounds that do of contain carbon generally found in nor -living things.A. Organic compound B. Ammonium cyanate C. Inorganic compoun ds D. Hydrocarbon 22.Which of the fol lowing is organic compound? D. C2H4 CO_(2) A. NaCl B: CaO 23 The general formula of alkenes is : C CnH2n-2 D. CnH2n+1 CnH2n+2 A. CnH2n