Nov. 2013

Question 1

A set of independent functions which are solutions to a given differential equation?

Answer 1

Eigen Function

Question 2

How Dopamine is formed?

Answer 2

Dopamine is synthesized in the brain and kidneys . Synthesized from amino acid Tyrosine then it is converted to dopamine by the enzymes Tyrosine Hydroxylase (TH) and l-amino acid.

Question 3

Raoult’s Law is for?
A. Electrolyte soln
B. Dilute soln

Answer 3

Dilute Solution

Question 4

What is the product form when H in carboxylic acid is replaced by an alkyl group?

Answer 4

Esters

Question 5

Method used to purify salt water in other areas?

Answer 5

Reverse Osmosis (for desalination)

Question 6

What block in periodic table has the most number of element?

Answer 6

d-block - Most # of element

s-block -Least # of element

Question 7

How many proton has there in Ba2+?

Answer 7

Ans. 56
# of proton = atomic number
# of neutron = Atomic mass - atomic number
# of electron = Atomic number - Charge

Question 8

What property will change in an element during oxidation?

Answer 8

Charge

Question 9

Same chemical composition different structures?

Answer 9

Isomers

Question 10

In an octahedral complexes what will occupy the 3s orbital?
A. Cu2+
B. Ni2+
c. Zn2+
d. None of these

Answer 10

D

*All are in 3d orbital

Question 11

What is the driving force in water cycle?
A. Sun
B. WATer Tides
C. Gravity

Answer 11

Sun

Question 12

What process is used to produce synthetic urea?

Answer 12

Wohler Synthesis

• conversion of ammonium cyanade to urea
• discovered by Frederick Wohler in 1828

Question 13

What is true about EMF and Spontaneity?

Answer 13

Negative voltage indicates that the reverse chemical reaction is SPONTANEOUS

Question 14

Which is bigger Cation or Anion?

Answer 14

Ans. ANION - neutral atom that gained electron

CATION- Losses electron

Question 15

Electron that participates in bonding?

Answer 15

valence electron

Question 16

What is VSEPR (Valence Shell Electron Pair Repulsion)?

Answer 16

VSEPR - Model used to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms.

Question 17

Meaning of Half Life?

Answer 17

Half Life - the time required for a quantity to reduce half its initial value.
- The term is commonly used in nuclear physics to deacribe how quickly unstable atoms undergo radioactive decay.

Question 18

Degrees of Freedom of ethanol and water in equilibrium?

Answer 18

DF = C-P+2
DF = 2-2+2
DF= 2