Subject: (General Chemistry)
Time Allowed: 10 Minutes
Maximum Marks: 10
NOTE: Attempt this Paper on this Question Sheet only. Please encircle the correct option. Division of marks is given in front of each question. This Paper will be collected back after expiry of time limit mentioned above.
Part-I Encircle the correct option, cutting and overwriting is not allowed. (10)
Wave-particle duality of electron was verified by
a) De-Broglie b) Davisson & Germer
c) Heisenberg d) Both a & b
Electronic transition between Sigma bonding and Sigma anti bonding molecular orbital is a/an ___ transition
a) Allowed b) Forbidden
c) d-d transition d) None of these
Which of the following is the correct relation
Which of the following catalyst can be used for nucleophile addition reactions of carbonyl compounds.
a) HCl b) NaOH
c) Both (a) and (b) d) Neither (a) nor (b)
The value separating the higher half from the lower half of a data set is called
a) Mean b) Mode
c) Median d) All of these.
The most widely used flame for Atomic absorption is
a) Air-Natural pas b) Air-Acetylene
c) Air-Propane d) Air-Hydrogen
Which of the following gives positive bisulfite test.
a) Formic acid b) Methanol
c) Dimethyl ether d) Ethanol
All are correct about metallic conduction except
a) Involve free electrons b) Decrease by increase in temperature
c) It is a chemical change d) Conducts through electrodes
In dilute electrolytic solution. cach ion migrates independently of its co-ion is the concept of
a) Kohlrausch’s Law b) Faraday’s 1st Law
¢) Ostwald’s Dilution Law d) Faraday’s 2nd Law
Consider the following data for Elements X. Y and Z
Eexd = +0.76V Y. Ered = +0.54V Z. Eves = -1.67V
Which of the following is the correct increasing order of Strength as reducing agent.
a) Z<Y<X b) X<Y<Z
c) Y<X<Z d) Z<K<Y
Subject: Chemistry-IV (General Chemistry)
Time Allowed: 2 Hours 45 Minutes
Maximum Marks: 50
NOTE: ATTEMPT THIS (SUBJECTIVE) ON THE SEPARATE ANSWER SHEET PROVIDED.
Part-II Give short details of each of them, each answer carries equal marks. (20)
Q#1: Give nwo chemical tests of aldehydes and ketones.
Q#2: Compare the reactivity of aldehydes and ketones.
Q#3: How wave-particle duality of electron was verified?
Q#4: What are probability functions?
Q#5: State Faraday’s | Law of electrolysis.
Q#6: Give the construction and working of Standard Hydrogen Electrade.
Q#7: What are systematic and random errors?
Q#8: State Law of mass action and give its mathematical statement.
Q#9: State Beer-Lambert’s Law.
Q#10: Compare the strength of Aliphatic and Aromatic Carboxylic acids.
Part-III Give brief answers, each answer carries equal marks. (30)
Q#1: Explain the construction and working of UV/Vis spectrophotometer.
Q#2: What are Buffers? Give its types. How it controls the pH of solution?
Q#3: Explain Photoelectric effect and Compton Effect.
Q#4: Derive an expression for the Energy of electron in valence shell of hydrogen atom. Also give two defects of Bohr’s atomic model.
Q#5: What is Transference Number? Explain Hittort’s method for the determination of Transference Number.
Q#6: Explain Witty Reaction along with its mechanism.