Q. Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C ?

View solution

Q. Interchain forces are the weakest in case of

View solution

Q. __________ possesses viscoelastic properties.

View solution

Q. Copper is dissolved from its ore by H₂SO₄ in a percolation tank made of

View solution

Q. Bearings subjected to light load are made of

View solution

Q. Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysterisis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%) ?

View solution

Q. __________ does not contain tin as an alloying material.

View solution

Q. A metallic alloy in general as compared to their pure metal components is

View solution

Q. Pick out the wrong statement.

View solution

Q. Ball bearings are normally made of __________ steel.

View solution

Q. The electrical conductivity of a __________ decreases with rise in temperature.

View solution

Q. Which one occupies the lowermost position in the electromotive series of metals ?

View solution

Q. Addition of nickel to copper improves its

View solution

Q. Presence of even 0.005% of __________ in copper makes it highly brittle, rendering it useless for wire-drawing.

View solution

Q. Ceramic materials fabrication can not be done by

View solution

Q. Which has the maximum melting point out of the following ?

View solution

Q. Cast iron is

View solution

Q. Which of the following has no effect on the carbide forming tendency in steels ?

View solution

Q. Approximate value of the modulus of elasticity for steel is about __________ x 10⁶ kg/cm².

View solution

Q. High speed cutting tool steels contain about __________ percent of tungsten.

View solution