Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

Question

Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

A. -5 to 0

B. 5 to 10

C. 30 to 50

D. 75 to 80

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Alcohol content in freshly prepared natural and fortified wine may be respectively around __________ percent.

A. 7-14 and 14-30

B. 7-14 and 40-50

C. 14 - 30 and 40-50

D. 10 - 20 and 40 - 50

Discuss this answer

__________ paper is used in the manufacture of newsprint paper.

A. Ground-wood

B. Board

C. Tissue

D. Wrapping

Discuss this answer

Starting material for the production of styrene butadiene rubber (SBR) is

A. Ethyl alcohol

B. Ethylene

C. Both (A) & (B)

D. Neither (A) nor (B)

Discuss this answer

Dacron (or Terylene) fibres as compared to nylon fibres have

A. Better heat & acid resistant properties

B. Poorer resistance to alkalis

C. Poorer dyeability

D. All (A), (B) and (C)

Discuss this answer

Presence of sodium tripolyphosphate (an additive) in synthetic detergent

A. Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions)

B. Inhibits its corrosive effects

C. Does not allow redeposition of dirt on the cleaned surface

D. None of these

Discuss this answer

The catalyst used in the production of elemental sulphur from H₂S (by oxidation-reduction) is

A. Alumina

B. Silica gel

C. Platinum

D. Nickel

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Na₂CO₃.10H₂O is called

A. Washing soda

B. Soda ash

C. Slaked lime

D. Quicklime

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Free alkali in a toilet soap is __________ that in a laundry shop.

A. Less than

B. More than

C. Same

D. None of these

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Zeolite used in water softening process (cation exchange) is regenerated by washing with

A. Brine

B. Chloramines

C. Sodium bisulphite

D. Liquid chlorines

Discuss this answer

Bitterns is a/an

A. Unsaturated fat

B. Starting material for the production of iodine

C. By-product of chlor-alkali industry

D. None of these

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Average sulphur content in Indian pyrites is about __________ percent.

A. 15

B. 35

C. 55

D. 70

Discuss this answer

Which of the following is the purest form of water out of the following?

A. Underground water

B. Rain water

C. Well water

D. Lake water

Discuss this answer

Raw materials used for producing __________ cement does not contain iron oxide.

A. Waterproof

B. Slag

C. White

D. Pozzolan

Discuss this answer

Pick out the true statement pertaining to water treatment.

A. Slow sand filters can remove colour completely

B. Activated carbon can be used for taste & odour control without subsequent filtration

C. Application of activated carbon reduces the temporary hardness of water

D. Normally, the turbidity is removed by adding a coagulant prior to sedimentation

Discuss this answer

Poly Tetrafluoroethylene (P.T.F.E.) is known as

A. Bakelite

B. Teflon

C. Celluloid

D. Dacron

Discuss this answer

Proximate analysis of coal determines its __________ content.

A. Moisture, ash, sulphur & volatile matter

B. Moisture & volatile matter

C. Moisture, sulphur, nitrogen & fixed carbon

D. None of these

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Sulphuric acid completely saturated with sulphur trioxide is called

A. Concentrated sulphuric acid

B. Oleum

C. Sulphurous acid

D. Dilute sulphuric acid

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Which of the following is not required in the manufacture of soda ash by Solvay process?

A. Ammonia

B. Limestone

C. Nitric acid

D. None of these

Discuss this answer

Mercury cells for caustic soda manufacture, compared to diaphragm cells

A. Require lower initial investment

B. Require more power

C. Produce lower concentration NaOH

D. None of these

Discuss this answer

Epoxy resin

A. Is a good adhesive

B. Is an elastomer

C. Cannot be used for surface coatings

D. Is a polyester

Discuss this answer

The purpose of tanning in leather industry is to

A. Stiffen the leather

B. Smoothen the leather

C. Make it flexible

D. Impart water resistance

Discuss this answer

Phenol formaldehyde

A. Employs addition polymerisation

B. Employs condensation polymerisation

C. Is a monomer

D. Is an abrasive material

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Widely used method for the conditioning of boiler feed water is the

A. Cold lime process

B. Coagulation

C. Hot-lime soda process

D. Sequestration

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Which of the following is used as a binding material in soap to improve soap texture?

A. Rosin

B. Borax

C. Benzyl acetate

D. Sodium carbonate

Discuss this answer

__________ of rubber decreases after its vulcanisation.

A. Resistance to the action of organic solvent

B. Tackiness

C. Maximum service temperature

D. Tensile strength

Discuss this answer

Contact process of sulphuric acid manufacture

A. Yields acid of higher concentration than chamber process

B. Yields acids of lower concentration than chamber process

C. Is obsolete

D. Eliminates absorber

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Which of the following is not a pyrite ore?

A. Celestite

B. Galena

C. Gypsum

D. Siderite

Discuss this answer

Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces

A. Nylon-6

B. Dacron

C. Polyester

D. PVC

Discuss this answer

Fat dispersed in water is exemplified by

A. Colloids

B. Gel

C. Butter

D. Emulsion

Discuss this answer

Which form of sulphur is the most stable at room temperature?

A. Plastic

B. Monoclinic

C. Rhombic

D. Flowers of sulphur

Discuss this answer

Accepted Answer

C. 30 to 50

Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Alcohol content in freshly prepared natural and fortified wine may be respectively around __________ percent.

__________ paper is used in the manufacture of newsprint paper.

Starting material for the production of styrene butadiene rubber (SBR) is

Dacron (or Terylene) fibres as compared to nylon fibres have

Presence of sodium tripolyphosphate (an additive) in synthetic detergent

The catalyst used in the production of elemental sulphur from H₂S (by oxidation-reduction) is

Na₂CO₃.10H₂O is called

Free alkali in a toilet soap is __________ that in a laundry shop.

Zeolite used in water softening process (cation exchange) is regenerated by washing with

Bitterns is a/an

Average sulphur content in Indian pyrites is about __________ percent.

Which of the following is the purest form of water out of the following?

Raw materials used for producing __________ cement does not contain iron oxide.

Pick out the true statement pertaining to water treatment.

Poly Tetrafluoroethylene (P.T.F.E.) is known as

Proximate analysis of coal determines its __________ content.

Sulphuric acid completely saturated with sulphur trioxide is called

Which of the following is not required in the manufacture of soda ash by Solvay process?

Mercury cells for caustic soda manufacture, compared to diaphragm cells

Epoxy resin

The purpose of tanning in leather industry is to

Phenol formaldehyde

Widely used method for the conditioning of boiler feed water is the

Which of the following is used as a binding material in soap to improve soap texture?

__________ of rubber decreases after its vulcanisation.

Contact process of sulphuric acid manufacture

Which of the following is not a pyrite ore?

Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces

Fat dispersed in water is exemplified by

Which form of sulphur is the most stable at room temperature?

Also checkout

Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Alcohol content in freshly prepared natural and fortified wine may be respectively around __________ percent.

__________ paper is used in the manufacture of newsprint paper.

Starting material for the production of styrene butadiene rubber (SBR) is

Dacron (or Terylene) fibres as compared to nylon fibres have

Presence of sodium tripolyphosphate (an additive) in synthetic detergent

The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is

Na2CO3.10H2O is called

Free alkali in a toilet soap is __________ that in a laundry shop.

Zeolite used in water softening process (cation exchange) is regenerated by washing with

Bitterns is a/an

Average sulphur content in Indian pyrites is about __________ percent.

Which of the following is the purest form of water out of the following?

Raw materials used for producing __________ cement does not contain iron oxide.

Pick out the true statement pertaining to water treatment.

Poly Tetrafluoroethylene (P.T.F.E.) is known as

Proximate analysis of coal determines its __________ content.

Sulphuric acid completely saturated with sulphur trioxide is called

Which of the following is not required in the manufacture of soda ash by Solvay process?

Mercury cells for caustic soda manufacture, compared to diaphragm cells

Epoxy resin

The purpose of tanning in leather industry is to

Phenol formaldehyde

Widely used method for the conditioning of boiler feed water is the

Which of the following is used as a binding material in soap to improve soap texture?

__________ of rubber decreases after its vulcanisation.

Contact process of sulphuric acid manufacture

Which of the following is not a pyrite ore?

Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces

Fat dispersed in water is exemplified by

Which form of sulphur is the most stable at room temperature?

Also checkout

The catalyst used in the production of elemental sulphur from H₂S (by oxidation-reduction) is

Na₂CO₃.10H₂O is called