Related Practice Questions :

Which ion forms a hydroxide highly soluble in water?

(a) Ni2+

(b) K+

(c) Zn2+

(d) Al3+

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Strongest reducing agent among the following is:

(a) K

(b) Na

(c) Al

(d) Mg

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When crystal of caustic soda is exposed to air, a liquid layer is deposited because:

(a) crystal melts

(b) crystal loses water

(c) crystal absorbs moisture and CO2

(d) crystal sublimes

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Brine is chemically:

(a) conc. solution of Na2CO3

(b) conc. solution of Na2SO4

(c) conc. solution of NaCl

(d) conc. solution of alum

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Sodium reacts with water less vigorously than potassium because:

(a) it has higher atomic weight

(b) it is less electropositive

(c) it is more electronegative

(d) it is metal

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