Which of the following is not a closed system
(i) Recket engine during dropulsion
(ii) Pressure cooker
(iii) Tea placed in a stell kettle
Jet engine

Which among the following have open circulatory system? (i) Periplaneta (ii) Limax (iii) Pheretima (iv) Hydra

Classify the following into open, closed or isolated system : (i) Animals and plants (ii) A referigerator or a fridge (iii) A solar cooker

Classify the following into open, closed or isolated system : (i) Animals and plants (ii) A referigerator or a fridge (iii) A solar cooker

Which of the following is likely to undergo racemization during alkaline hydrolysis? (I) (II) (III) (IV)

Classify the following as open, closed or isolated system i) A beaker containing open boiling water ii) A chemical reaction in a closed vessel iii) A cup of tea placed on a table iv) Hot water in perfectly insulated closed container

Classify the following as open, closed or isolated system. (i) Animals and plants on the earth. (ii) Calorimeter. (iii) Thermos flask filled with hot tea. (iv) A tin containing Pepsi.

Which among the following have open circulatory system? (i) Arthropoda (ii) Mollusca (iii) Annelida (iv) Coelenterata

Which among the following have open circulatory system? (i) Arthropoda (ii) Mollusca (iii) Annelida (iv) Coelenterata

Which of the following changes take place during roasting ? (i) Impurities are removed as they form volatile oxides. (ii) Ore is converted into their volatile oxides. (iii) Changes like oxidation , chlorination, etc. take place