There’s only 1 category for types of polymerization reactions utilized to form polymers: condensation mechanism to form condensation polymers.

Match the following Types of mechanism Motion achieved P. Scott Russel mechanism 1. Intermittent motion Q. Geneva mechanism 2. Quick return motion R. Off set slider crank mechanism 3. Simple harmonic motion S. scotch Yoke mechanism 4. Straight line motion

A

P-2,Q-3,R-1,S-4

B

P-3,Q-2,R-4,S-1

C

P-4,Q-1,R-2,S-3

D

P-4,Q-3,R-1,S-2

The most appropriate sequence of the reactions for carrying out the following conversion
Basics of Organic Reaction Mechanism mcq question image

Basics of Organic Reaction Mechanism mcq question image

is

A

(i) peracid, (ii) H⁺, (iii) Zn/dil.HCl

B

(i) Alkaline KMnO₄, (ii) NalO₄, (iii) N₂H₄/KOH

C

(i) Alkaline KMnO₄, (ii) H⁺, (iii) Zn/dil.HCl

D

(i) O₃/Me₂S, (ii) NaOEt, (iii) N₂H₄/KOH

The two pericyclic reactions successively involved in the thermal transformation given below are
Basics of Organic Reaction Mechanism mcq question image

A

6π-electrocyclization followed by π-cycloaddition

B

8π-cycloaddition followed by π-electrocyclization

C

6π-cycloaddition followed by π-electrocyclization

D

4π-electrocyclization followed by π-cycloaddition

With respect to the Thermosetting Polymers, mark the correct statements It consists of highly cross-linked polymer chains. They are brittle in nature Bakelite is the example of thermosetting polymers These are synthesized by condensation polymerization.

A

All the above

B

Statement I and III only

C

Statement I, II and III only

D

Statement II and IV only

Which are the correct statements? (a) Film condensation usually occur on oily surface. (b) Temperature of condensate gradually increases towards the liquid-vapour interface. (c) Suitable coating is used to promote dropwise condensation. (d) Dropwise condensation gives lower heat transfer rate than film condensation.

A

(a), (d)

B

(e), (d)

C

(a),(b)

D

(b), (c)

Consider the following statements (i) If a condensing liquid does not wet a surface, then drop wise condensation will not take place on it (ii) Drop wise condensation gives a higher transfer rate than film wise condensation (iii) Reynolds number of condensing liquid is based on its mass flow rate (iv) Suitable coating or vapor additive is used to promote film wise condensation Identify the correct statement

A

i and ii

B

ii, iii and iv

C

iv only

D

i, ii and iii

Statement 1: Film-type condensation has a higher heat transfer co-efficient than drop-wise condensation. Statement 2: Drop-wise condensation is easier to maintain than Film-type condensation

A

True, False

B

True, True

C

False, False

D

False, True

According to the structure of the polymer, it is classified into- Linear polymers Branched-chain polymers Cross-linked or network polymers Co-polymers

A

Only I & II

B

Only III & IV

C

All I, II, III

D

All II, III, IV

Paper making polymers can be categorized as naturally occurring polymers, modified naturally occurring polymers, and synthetic polymers.

A

True

B

False

Which of the below are inversions of slider crank mechanism?
1. Oscillating cylinder engine mechanism
2. Toggle mechanism
3. Radial cylinder engine mechanism
4. Quick return mechanism

A

1, 2 and 4

B

2, 3 and 4

C

1, 2 and 3

D

1, 3 and 4

There’s only 1 category for types of polymerization reactions utilized to form polymers: condensation mechanism to form condensation polymers.

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