__________ is the most suitable for compounding rubber and plastic solids.

Mixer used for rubber compounding is

A

Mixer-extruder

B

Banbury internal mixer

C

Muller mixer

D

Pug mill

Styrene-butadiene-rubber (SBR) as compared to natural rubber has

A

Poorer tensile strength

B

Poorer resistance to oxidation

C

Greater amount of heat build-up under heavy loading

D

All of the above

Styrene butadiene rubber (SBR) as compared to natural rubber has

A

Poor tensile strength

B

Poorer resistance

C

Greater amount of heat build up heavy loading

D

All of the above

Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex?

A

Ammonium alum

B

Potassium alum

C

Both A & B

D

Neither A nor B

__________ column is the most suitable for achieving the best performance for mass transfer operations involving liquid with dispersed solids.

A

Watted wall

B

Packed

C

Plate

D

Spray

Mixing of plastic solids is generally facilitated by

A

Dispersion

B

Mastication

C

Kneading

D

None of these

Which of the following is the most suitable filter for separation of abrasive solids suspended in a corrosive liquid?

A

Sand bed filter

B

Plate and frame filter press

C

Vacuum filter

D

Batch basket centrifuge

Suppose you are the account holder of a bank. The bank . The bank offered you a plastic card with a credit limit of TK. 20.000 and your account has to be settled in full at the end of each month. Usually there is an annual fee for using this credit facility . This type of plastic card is called ?

A

Debit Card

B

Credit Card

C

Charge Card

D

Pre-paid Card

In case of a simply supported rectangular beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, is

A

$$\frac{{\text{L}}}{2}$$

B

$$\frac{{\text{L}}}{3}$$

C

$$\frac{{\text{L}}}{4}$$

D

$$\frac{{\text{L}}}{5}$$

In case of a simply supported I-section beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, is

A

$$\frac{{\text{L}}}{2}$$

B

$$\frac{{\text{L}}}{3}$$

C

$$\frac{{\text{L}}}{4}$$

D

$$\frac{{\text{L}}}{5}$$

__________ is the most suitable for compounding rubber and plastic solids.

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