Styrene and 1,3-butadiene on polymerisation forms

Home » Styrene and 1,3-butadiene on polymerisation forms

1. Buna-N
2. Neoprene
3. Butyl rubber
4. Buna-S

Solution: Buna-S

Styrene-butadiene rubber is another name for the rubber produced (SBR). Bu stands for butadiene, Na for sodium, and S for styrene in Buna-S. Sulfur is used to vulcanize it. In terms of physical qualities, the rubber is marginally inferior to natural rubber.

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The phase difference between the current and voltage at resonance is
A 0
B $\pi / 2$
C $\pi_{1}$
D $-\pi$

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A Concave, concave
B Convex, convex
C Convex, concave
D Concave, convex

Rate of reaction of any substance depends on
(A) active mass
(B) molecular weight
(C) atomic weight
(D) equivalent weight

Formula of oleum is
(A) $\mathrm{H}_{2} \mathrm{~S}_{2} \mathrm{O}_{7}$
(B) $\mathrm{H}_{2} \mathrm{SO}_{4}$
(C) $\mathrm{H}_{2} \mathrm{SO}_{3}$
(D) $\mathrm{H}_{2} \mathrm{SO}_{5}$

The scalar product of $5 \hat{i}+\hat{j}-3 \hat{k}$ and $3 \hat{i}-4 \hat{j}+7 \hat{k}$ is (A) 10 (B) $-10$ 6 (C) 15 (D) $-15$

Q80) Eukaryotic cells do not possess ________ . a. Ribosomes b. Mesosomes c. Fimbriae d. Mitochondria 1. Only b 2. b and c 3. a and b 4. only d

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Q77) Damage to VI cranial nerve in human, may affect the movements of ________ . 1. Neck 2. Jaw 3. Tongue 4. Eye

Q76) The size of genome of Methanococcus jannaschii is ______ . 1. 1830 kb 2. 1660 kb 3. 569 kb 4. 12,500 kb

Q75) In Morgan’s experiment on Drosophilia cross between yellow bodied, white eyed female with wild type male gives ______ % of parental gene combination in F2 generation. 1. 37% 2. 1.3% 3. 62.8% 4. 98.7%

Q74) A man working in a furnace room suffered from asphyxiation. What should be the main reason? 1. More O2 level in the furnace room. 2. CO poisoning due to high CO level in the furnace room. 3. More O2 as well as fumes in the furnace room. 4. Less O2 level in the furnace room.

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More Material

The phase difference between the current and voltage at resonance is
A 0
B $\pi / 2$
C $\pi_{1}$
D $-\pi$

A …… lens is used to correct myopia and a ….. lens is used to correct hypermetropia.
A Concave, concave
B Convex, convex
C Convex, concave
D Concave, convex

Rate of reaction of any substance depends on
(A) active mass
(B) molecular weight
(C) atomic weight
(D) equivalent weight

Formula of oleum is
(A) $\mathrm{H}_{2} \mathrm{~S}_{2} \mathrm{O}_{7}$
(B) $\mathrm{H}_{2} \mathrm{SO}_{4}$
(C) $\mathrm{H}_{2} \mathrm{SO}_{3}$
(D) $\mathrm{H}_{2} \mathrm{SO}_{5}$

The scalar product of $5 \hat{i}+\hat{j}-3 \hat{k}$ and $3 \hat{i}-4 \hat{j}+7 \hat{k}$ is (A) 10 (B) $-10$ 6 (C) 15 (D) $-15$

Q80) Eukaryotic cells do not possess ________ . a. Ribosomes b. Mesosomes c. Fimbriae d. Mitochondria 1. Only b 2. b and c 3. a and b 4. only d

Q79) Sexual reproduction is absent in the membranes of _________ . 1. Deuteromycetes 2. Phycomycetes 3. Basidiomycetes 4. Ascomycetes

Q78) The enzymes needed for Krebs cycle are located in ______ . 1. Oxysomes of mitochondria 2. Matrix of mitochondria 3. Cytoplasm of cell 4. Outer membrane of mitochondria

Q77) Damage to VI cranial nerve in human, may affect the movements of ________ . 1. Neck 2. Jaw 3. Tongue 4. Eye

Q76) The size of genome of Methanococcus jannaschii is ______ . 1. 1830 kb 2. 1660 kb 3. 569 kb 4. 12,500 kb

Q75) In Morgan’s experiment on Drosophilia cross between yellow bodied, white eyed female with wild type male gives ______ % of parental gene combination in F2 generation. 1. 37% 2. 1.3% 3. 62.8% 4. 98.7%

Q74) A man working in a furnace room suffered from asphyxiation. What should be the main reason? 1. More O2 level in the furnace room. 2. CO poisoning due to high CO level in the furnace room. 3. More O2 as well as fumes in the furnace room. 4. Less O2 level in the furnace room.

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