`{:(," 'अ'", " 'ब'"),(1. , "आरहीनियस", "(i) pH") ,(2. , "ओस्टवाल्ड", "(ii) आयनों का चालन"),(3., "बफर विलयन", "(iii) तनुता नियम"),(4., "सोरेनसन", "(iv) आयनिक सद्धान्त"),(5. , "कोलराउशं","(v) pH स्केल"):}`

1 a(iii), b(ii), c(i), d(iv) 2 a(i), b(iv), c(i), d(iii) 3 a(iv), b(i), c(iii), d(iv) 4 a(ii), b(iii), c(iv), d(i)

Match Column - I with Column - II and select the CORRECT option from the codes given below. (a) 1 - (ii), 2 - (i), 3 - (iv) , 4 - (iii) (b) 1 - (iv), 2 - (i), 3 - (ii) , 4 - (iii) (c) 1 - (iv), 2 - (iii), 3 - (ii) , 4 - (i) (d) 1 - (iii) , 2 - (iv), 3 - (i) , 4 - (ii)

Locate the following points : (i) (1, -1, 3) (ii) (-1, 2, 4) (iii) (-2, -4, -7) (iv) (-4, 2, -5)

Evaluate: (i) 3 ^(-4) " "(ii) (-4) ^(3) " "(iii) ((3)/(4))^(-2)" "(iv) ((-2)/(3)) ^(-5) " "(v) ((5)/(7))^(0)

Find (i) 1/2 of (ii) (2) 3/4 (iii) (4) 2/9 (iv) 5/8 of (v) (3) 5/6 (ii) (9) 2/3

Find (i) 1/2 of (ii) (2) 3/4 (iii) (4) 2/9 (iv) 5/8 of (v) (3) 5/6 (ii) (9) 2/3

Find : (i) 7/3 -: 2 (ii) 4/9 -: 5 (iii) 6/13 -: 7 (iv) (4) 1/3 -: 3 (v) (3)1/2 -: 4 (vi) (4) 3/7 -: 7

Name the octant in which each of the following points lies. (i) (1, 2, 3) (ii) (4, -2, 3) (iii) (4, -2, -5) (iv) (4, 2, -5) (v) (-4, 2, 5) (vi) (-3, -1, 6) (vii) (2, -4, -7) (viii) (-4, 2, -5)

In which octant the following points lie : (i) (2, 1, 4) (ii) (-1,2,4) (iii) (1,-3, 2) (iv) (1, 5,-6) (v) (2, -1, -3) (vi) (-2, 3, -5) (vii) (-4, -1, 3) (viii) (-1, -2, 3)

In which octant the following points lie : (i) (2, 1, 4) (ii) (-1,2,4) (iii) (1,-3, 2) (iv) (1, 5,-6) (v) (2, -1, -3) (vi) (-2, 3, -5) (vii) (-4, -1, 3) (viii) (-1, -2, 3)