All the atoms of the world comprise of electrons, proton & neutron except that of ______________ atom in which neutron is absent ?
(A) Deuterium
(B) Hydrogen
(C) Neon
(D) Helium
Highest cutting speed is achieved by the _______________ tool material ?
(A) High speed steel
(B) Carbide
(C) Cast alloy
(D) Plain carbon steel
Which of the following materials has the poorest electrical conductivity ?
(A) Carbon
(B) Aluminium
(C) Silver
(D) Stainless steel
Viscoelastic behaviour is observed in _______________________ materials?
(A) Non-crystalline organic polymeric
(B) Ceramic
(C) All crystalline
(D) All amorphous
Load cells used for the measurement of weight has______________?
(A) Compact & rugged construction with an accuracy of 0.1 to 1%
(B) No moving parts and incurs negligible deflection under load
(C) Provision of thermal compensation and is hermetically sealed
(D) All A, B & C
The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the _____________ content in steel?
(A) Carbon
(B) Manganese
(C) Both A nor B
(D) Neither A nor B
Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is__________________?
(A) Black
(B) Silver grey
(C) Green
(D) Yellow
Out of the following, the most malleable material is________________?
(A) Copper
(B) Aluminium
(C) Wrought iron
(D) Lead
Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal_________________?
(A) Tensile strength
(B) Compressive strength
(C) Young’s modulus
(D) Thermal co-efficient of expansion
While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about _____________ °C ?
(A) 1800
(B) 2000
(C) 2400
(D) 3000