Polythene (low or high density) containers are not corroded by___________________?

Byadmin March 10, 2019August 27, 2021

Polythene (low or high density) containers are not corroded by___________________?

A. Sulphuric acid (10%) at room temperature
B. Nitric acid (95%) at room temperature
C. Sulphur trioxide at 60°C
D. Any of these

CHEMICAL ENGINEERING | Materials and Construction

Containers made of high silicon cast iron (14% Si) are not suitable for the storage of

Question: Containers made of high silicon cast iron (14% Si) are not suitable for the storage of
[A].

acetic acid.
[B].
benzoic & boric acids.
[C].
phosphoric acid (95%) & sulphuric acid (95%).
[D].
hydrochloric acid (concentrated).

Answer: Option D

Explanation:

No answer description available for this question.

Read More Containers made of high silicon cast iron (14% Si) are not suitable for the storage of
Materials and Construction

Molybdenum steels containing 0.15 to 0.40% molybdenum___________________?

Molybdenum steels containing 0.15 to 0.40% molybdenum___________________?

A. Are prone to temper brittleness
B. Are used for automobile parts like gears, axle, shaft, bearings etc.
C. Have very poor fatigue resistance
D. Do not contain nickel or chromium or both

Read More Molybdenum steels containing 0.15 to 0.40% molybdenum___________________?
Materials and Construction

Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its__________________?

Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its__________________?

A. Corrosion resistance
B. Tensile strength
C. Machinability
D. Compressive strength

Read More Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its__________________?
Materials and Construction

Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)___________________?

Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)___________________?

A. Do not require heat treatment for any of its applications
B. Are used for leaf and coiled springs
C. Do not have good resilience properties
D. Is tempered at 850°C

Read More Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)___________________?
CHEMICAL ENGINEERING | Materials and Construction

Invar used in thermocouples is an alloy of nickel and

Question: Invar used in thermocouples is an alloy of nickel and
[A].

iron
[B].
copper
[C].
chromium
[D].
lead

Answer: Option A

Explanation:

No answer description available for this question.

Read More Invar used in thermocouples is an alloy of nickel and
Materials and Construction

Which of the following is not an alloy of copper ?

Which of the following is not an alloy of copper ?

A. Muntz metal
B. Admiralty gun metal
C. German silver
D. Pewter metal

Read More Which of the following is not an alloy of copper ?

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