Question Text
Question 2 :
Five solutions A, B, C, D and E when tested with universal indicator showed pH as 4, 1, 11, 7 and 9 respectively. Which solution is strongly alkaline?
Question 3 :
Which one of the following type of medicines is used for treating indigestion?
Question 6 :
Which among the following alloys contain non-metal as one of its constituents?
Question 7 :
Which of the following methods is suitable for preventing an iron frying pan from rusting?
Question 9 :
Food cans are coated with tin and not with zinc because
Question 10 :
An aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that
Question 12 :
Carbon is tetravalent because it has four valence electrons. Is it correct ?
Question 16 :
Balance the following chemical equations:
$NaCl + AgNO_{3} \rightarrow AgCl + NaNO_{3}$
Question 17 :
Write the balanced chemical equations for the following reactions:
Calcium hydroxide + Carbon dioxide $\rightarrow$ Calcium carbonate + Water
Question 18 :
Write the balanced chemical equations for the following reactions:
Aluminium + Copper chloride $\rightarrow$ Aluminium chloride + Copper
Question 20 :
Balance the following chemical equations:
$HNO_{3} + Ca(OH)_{2} \rightarrow Ca(NO_{3})_{2} + H_{2}O$
