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Water - Chemistry Jamb Past Questions and Answers

Chemistry Questions And Answers On Water
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Chemistry Jamb Past Questions


Questions and Answers on Water

Question 51 :



Tetraoxosulphate (VI) acid burns the skin by

A. Hydrolysis
B. Hydration
C. Heating
D. Dehydration


Question 52 :



When a salt loses its water of crystallization to the atmosphere on exposure, the process is said to be

A. Efflorescence
B. Deliquescence
C. Effervescence
D. Fluorescence


Question 53 :



Hardness of water is caused by the presence of ions of

A. Magnesium and silver
B. Cacium and magnesium
C. Sodium and potassium
D. Calcium and sodium


Question 54 :



When steam is passed over red-hot carbon, the substances produced are

A. Hydrogen and trioxocarbonate (IV) acid
B. Hydrogen, oxygen and carbon (IV) oxide
C. Hydrogen and carbon (II) oxide
D. Hydrogen and carbon (IV) oxide


Question 55 :



25cm3 of a mixture of nobel gases was obtained from air after the removal of other constituents. What was the original volume of air

A. 2,500 cm3
B. 1250 cm3
C. 125 cm3
D. 80 cm3






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