Single Choice

1. Which of the following is least alkline

2. Formic acid when heated with H2SO4 gives

(A) (COOH)2 (B) CH3COOH
(C) C2H5OH (D) CO

3. Reaction H+ + OH– → H2O is—
a) Very slow b) Slow c) fast d) Moderate

4. In DNA thyamine is held by two hydrogen bonds with the base
a) Adenine b) Cytosine c) Thyamine d) Guanine

5. Adenosin is an example of
a) (Nucleotide b) Nucleoside c) Purimenbase d) Pyrimidine base)

6. Drug used against AIDS is
a) LSD b) BHA c) AZI d) Bithional

7) Smelting involves reduction of metal oxide with
a) C b) CO c) Mg d) Al

8) Osmotic pressure of a solution is given by
a) π = SC/T b)π = CT/S c)π = SC/T d)π/C=ST

MORE THAN ONE CHOICE

9) The main factor which affect corrosion are
a)(Position of metal in electrochemical series
b)Presence of CO2 in water
c)Presence of impurities in metal
d)Presence of protective coating

10) Which of the following on reduction with LiAlH4 will give ethyl alcohol
(A) (CH3CO)2O (B) CH3COCl (C) CH3CONH2 (D) CH3COOC2H5

11) Species having bond order 2½ is/are

(A) N2+ (B) O2+ (C) O2–2 (D) N2–2