1) Human beings have pairs of chromosomes a) 24 b) 23 c) 46 d) 48 2) Process by which cell divide into two is called a) Mitosis b) Meiosis c) Fragmentation d) Regeneration 3) Calcium oxide is manufactured by heating a) Copper b) Carbondioxide c) Limestone d) Salt 4) Reaction involves an acid reacting with an alkali to form salt and water a) Neutralization b) Burning c) Decomposition d) Addition 5) Most commonly used barometer is a) Altimeter b) Aneroid barometer c) Torricelli barometer d) Magdeburg hemispheres 6) Ratio in which hydrogen and oxygen are present in water by volume a) 2:2 b) 1:1 c) 1:2 d) 2:1 7) Process does not involve a chemical reaction a) Digestion of food b) Burning of candle wax c) Melting of candle wax d) Fermantation 8) Chemical formula of magnesium oxide is a) MgO2 b) Mg2O c) MgO d) Mg(OH)2 9) It is an endothermic reaction a) Photosynthesis b) Combustion c) Respiration d) Burning 10) The transition of a substance from solid phase directly into gas phase is a) neutralization b) sublimation c) decomposition d) melting
0%
Science 8
共用
由
Mahnoorriaz
編輯內容
嵌入
更多
排行榜
顯示更多
顯示更少
此排行榜當前是私有的。單擊
共用
使其公開。
資源擁有者已禁用此排行榜。
此排行榜被禁用,因為您的選項與資源擁有者不同。
還原選項
飛機遊戲
是一個開放式範本。它不會為排行榜生成分數。
需要登錄
視覺風格
字體
需要登錄
選項
切換範本
顯示所有
播放活動時將顯示更多格式。
打開結果
複製連結
QR 代碼
刪除
恢復自動保存:
?