Statement-1: Sodium silicate is called water glass.
Statement-2:Salts of lead are poisonous in nature.
Statement-3: Producer gas is a mixture of CO and N.

Statement A: All homogeneous substances are pure Statement B: A pure substance is homogeneous in nature Statement C: Common salt solution in water is a homogeneous solution

Statement-1 The sum of the series 1 +(1+ 2+4)+ (4+ 6+ 9)+(9+12+16) ...(361 +380 +400) is 8000. Statement-2 sum_(k=1)^n(k^3-(k-1)^3)=n^3for any natural number n. (1) Statement-1 is true, Statement-2 is false. (2) Statement-1 is false, Statement-2 is true. (3) Statement-1 is true, Statement-2 is true Statement-2 is a correct explanation for Statement-l (4) Statement-1 is true, Statement-2 is true Statement-2 is not a correct explanation for Statement-l.

Statement 1: Ozone hole is the thinning of ozone layer. Statement 2: Ozone is a poisonous gas that leads thinning of the atmosphere.

Statement-1: Pyro-silicates are 1-D polymers. Statement-2: In pyro-silicates two orthosilicates are connected through one oxygen atom common.

Statement-1: Pyro-silicates are 1-D polymers. Statement-2: In pyro-silicates two orthosilicates are connected through one oxygen atom common.

Statement-1: On passing CO_(2) gas, lime water turns milky. Statement-2: Acid-Base (neutralisation takesb place.)

Statement-1 If a set A has n elements, then the number of binary relations on A = n^(n^(2)) . Statement-2 Number of possible relations from A to A = 2^(n^(2)) . (a) Statement-1 is true, Statement-2 is true, Statement-2 is a correct explanation for Statement-1 (b) Statement-1 is true, Statement-2 is true, Statement-2 is not a correct explanation for Statement-1 (c) Statement-1 is true, Statement-2 is false (d) Statement-1 is false, Statement-2 is true

Assertion : Statement -1 : The direction of dipolemoment in CO molecule is from oxygen to carbon Reason : Statement - 2 : The contribution of co-ordinate pi bond is more compared to electronegativity factor in the overall polarity of the molecule. (1) Statement-1 is true , statement -2 is true and statement-2 is the correct explanation for statement - 1. (2) Statement-1 is true, statement -2 is not the correct explanation for statement -1 . (3) Statement -1 is true, statement 2- is false (4) Statement -1 is false , statement-2 is true