Saturday, 12 October 2013

MCQ ASSIGNMENT OF CHAPTER-15 POLYMERS

Question 1
Which one of the following is not a condensation polymer? [CBSE AIPMT 2012]
A
Dacron
B
Neoprene
C
Melamine
D
Glyptal

Question 2
Which of the following statements is false? [CBSE AIPMT 2012]
A
The repeat unit in natural rubber is isoprene.
B
Both starch and cellulose are polymers of glucose.
C
Artificial silk is derived from cellulose.
D
Nylon-66 is an example of elastomer.

Question 3
Of the following which one is classified as polyester polymer? [CBSE AIPTM 2011]
A
Nylon-66
B
Terylene
C
Backelite
D
Melamine

Question 4
Which polymers occur naturally? [DELHI PMT 2009]
A
Starch and Nylon
B
Starch and Cellulose
C
Proteins and Nylon
D
Proteins and PVC

Question 5
Bakelite is obtained from phenol by reacting with [AIEEE 2008]
A
HCHO
B
(CH2OH)2
C
CH3CHO
D
CH3COCH3

Question 6
Which one of the following statements is not true? [CBSE AIPMT 2008]
A
Natural rubber has the trans-configuration at every double bond
B
Buna-S is a copolymer of butadiene and styrene
C
Natural rubber is a 1, 4-polymer of isoprene
D
In vulcanization, the formation of sulphur bridges between different chains make rubber harder and stronger.

Question 7
The monomers of Buna-S rubber are [KARNATAKA CET 2008]
A
styrene and butadiene
B
isoprene and butadiene
C
vinyl chloride and sulphur
D
butadiene

Question 8
Which one of the following polymers is prepared by condensation polymerization?
[CBSE AIPMT 2007]
A
Teflon
B
Rubber
C
Styrene
D
Nylon-6,6

Question 9
[NH(CH2)NHCO(CH2)4CO]n is a [CBSE AIPMT 2006]
A
addition polymer
B
thermosetting polymer
C
homopolymer
D
co-polymer

Question 10
Which of the following is a fully fluorinated polymer? [AIEEE 2005]
A
Neoprene
B
Teflon
C
Thiokol
D
PVC

Question 11
Which of the following is a polyamide? [AIEEE 2005]
A
Teflon
B
Nylon-6,6
C
Terylene
D
Bakelite

Question 12
Nylon is not a [KARNATAKA CET 2004]
A
condensation polymer
B
co-polymer
C
polyamide
D
homopolymer

Question 13
Which of the following is a chain growth polymer? [CBSE AIPMT 2004]
A
Nucleic acid
B
Polystyrene
C
Protein
D
Starch

Question 14
Nylon threads are made of [AIEEE 2003]
A
polyethylene polymer
B
polyvinyl polymer
C
polyester polymer
D
polyamide polymer


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Saturday, 5 October 2013

CHAPTER-1 BASIC CONCEPTS IN CHEMISTRY THEORY ASSIGNMENT CLASS XI



1.       What will be the mass of one atom of C-12 in grams?

2.       Calculate the average atomic mass of hydrogen using the following data :
Isotope               % Natural abundance                Molar mass
1H                           99.985                                                   1
2H                           0.015                                                     2

3.        Hydrogen gas is prepared in the laboratory by reacting dilute HCl with
granulated zinc. Following reaction takes place.
Zn + 2HCl ⎯→ ZnCl2 + H2
Calculate the volume of hydrogen gas liberated at STP when 32.65 g of zinc
reacts with HCl. 1 mol of a gas occupies 22.7 L volume at STP; atomic mass of
Zn = 65.3 u.
      4.      The density of 3 molal solution of NaOH is 1.110 g mL–1. Calculate the molarity
of the solution.
     5.       Volume of a solution changes with change in temperature, then, will the molality
of the solution be affected by temperature? Give reason for your answer.
     6.       If 4 g of NaOH dissolves in 36 g of H2O, calculate the mole fraction of each
component in the solution. Also, determine the molarity of solution (specific
gravity of solution is 1g mL–1)
      7.      The reactant which is entirely consumed in reaction is known as limiting reagent.
In the reaction 2A + 4B → 3C + 4D, when 5 moles of A react with 6 moles of B,
then
(i) which is the limiting reagent?

(ii) calculate the amount of C formed?
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Chapter-16 Chemistry in everyday life MCQ Assignment (XII)

Question 1
Which one of the following is employed as Antihistamine? [CBSE AIPMT 2011]
A
Omeprazole
B
Chloramphenicol
C
Diphenhydramine
D
Norethindrone

Question 2
Which one of the followings is employed as a Tranquilizer drug? [CBSE AIPMT 2010]
A
Promethazine
B
Valium
C
Naproxen
D
Mifepristone

Question 3
Arsenic containing medicine used for the treatment of syphilis, is [Kerala pmt 2010]
A
Tetracycline
B
Ofloxacin
C
Erythromycin
D
Salvarsan

Question 4
The artificial sweetener containing chlorine that has the appearance and taste as that of sugar and is stable at cooking temperature is [Kerala PMT 2010]
A
Aspartame
B
Saccharin
C
Sucralose
D
Alitame

Question 5

Aspirin is [West Bengal JEE 2010]
A
Acetyl salicylic acid
B
Benzoyl salicylic acid
C
Chloro benzoic acid
D
Anthranilic acid

Question 6
Which one of the following is employed as a tranquilizer? [CBSE AIPMT 2009]
A
Naproxen
B
Tetracycline
C
Chlorpheniramine
D
Equanil

Question 7
The role of phosphate in detergent powder is to [Delhi PMT 2009]
A
Control pH level of the detergent water mixture
B
Remove Ca2+ and Mg2+ ions from the water that causes the hardness of water
C
Provide whiteness to the fabrics
D
Form solid detergent as phosphate-less detergent are liquid in nature

Question 8
The oxidant which is used as an antiseptic is [West Bengal JEE 2009]
A
KBrO3
B
KMnO4
C
CrO3
D
KNO3

Question 9
Bithional is generally added to the soaps as an additive to function as a/an [Kerala PMT 2009]
A
Softener
B
Dryer
C
Buffering agent
D
Antiseptic

Question 10
Which among the following is not an antibiotic? [Kerala PMT 2008]
A
Erythromycin
B
Oxytocin
C
Penicillin
D
Tetracycline

Question 11
Which of the following is used as a "morning after pill"? [Kerala PMT 2007]
A
Mifepristone
B
Ethynylestradiol
C
Norethindrone
D
Promethazine

Question 12
Tincture of iodine is [AIIMS 2006]
A
alcoholic solution of I2
B
solution of I2 in aqueous KI
C
aqueous solution of I2
D
aqueous solution of KI









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