Electrons revolve around a positively charged nucleus in discrete (a)   .

A (a)   bond is an interatomic bond.

The bond between molecules is (a)   bond.

The bond which is stronger and stable is (a)   .

The bond which is week and less stable is (a)   .

The week force is also known as (a)   force.

Covalent bond is also known as (a)   bond.

The ionic solids are soluble in (a)   .

Covalent solids are soluble in (a)   .

Atoms are arranged periodically in (a)   solid.

Atoms are arranged in random in (a)   solid.

Non-Crystalline solid is also known as (a)   solid

In BCC structure, BCC stands for (a)   .

In FCC structure, FCC stands for (a)   .

Total no. of atoms in BCC structure is (a)   .

Total no. of atoms in FCC structure is (a)   .

Total no. of atoms in HCP structure is (a)   .

The combination of Vacancy and Interstitial defects is (a)   .

Copper and Zinc are solid solutions of (a)   .

Copper and Tin are solid solutions of (a)   .

Nickel and Copper are solid solutions of (a)   .

Iron and Carbon are solid solutions of (a)   .

Brass is an example for (a)   type of solid solutions

Steel is an example for (a)   type of solid solutions

Solute are small compared to (a)   .

Metal comprised of two or more elements, atleast one is metallic is called as (a)   .

The metal begins (a)   when temperature of liquid metal drops below a certain value.

The melting point of Pure iron is (a)   .

Iron Carbon diagram gives clear idea of (a)   temperatures for any carbon steel.

Less than 2% carbon is called (a)   .

Less than 0,83% carbon is called (a)   steel.

More than 0.83% carbon is called (a)   steel.

Sequence of heating and cooling is called (a)   .

The pure iron containing only 0.08% carbon is (a)   .

Pearlite exists at (a)   ͦC temperature.

The steel is hard and brittle when it is in (a)   micro constituent.

The (a)   micro-constituent is in the form of tiny globules.

Box annealing in a sealed container is to reduce (a)  

Pack carburizing is also called as (a)   carburizing.

Energizer used in pack carburizing is (a)   .

Immediately after hardening, (a)   should be done.

The chamber carrying a refractory lining inside is called heat treatment (a)   .

Acid pickling is a process of (a)  

Acid pickling produce (a)  

Commonly acid used in acid cleaning Is (a)  

Grit blasting Is used for (a)  

In Grit Blasting for Making Small Component (a)  

Alkaline detergent cleaning is used for (a)  

Metallurgical microscope works on the principle of (a)  

(a)   carries eye piece at its top

Body tube is connected to the upper end of the limb with the help of (a)  

(a)   magnifies the image formed by objective lens

Small specimen is to be mounted on (a)  

Steel is an alloy of (a)  

(a)   is the special purpose steel

Carbon content in tool steel is (a)  

(a)   is well suited for manufacturing cutting tools which can operated at high speed

Full form of HCHCr steel is (a)  

Low hardness & strength after hardening due to (a)  

Low hardness & strength after hardening can be avoid by (a)  

Improper carburizing atmosphere leads to which defect in heat treatment

(a)  

Soft spot in heat treatment due to (a)  

Soft spots in H. T can be avoid by (a)  

Large piece non-uniformity in heating leads to which defects in H.T (a)  

Oxidation & decarburisation defects in H.T due to (a)  

Oxidation & decarburization defects in H.T can be avoid by (a)  

Overheating leads to which defects (a)  

Distortion & warping defects in H.T due to (a)  

Tumbling is an example of (a)   cleaning

Belt sanding is an example of (a)   cleaning

Electropolishing is a basically reverse process of (a)  

Solvent cleaning is an example of (a)   cleaning

The most commonly used acid in acid cleaning is (a)  

Pickling opeation can be accelerated by (a)  

(a)   is the most commonly used method for industrial finishes.

Process of providing metalic coating by means of electrolysis is called (a)  

(a)   is a vapour coating process

In a coating the material will deposited is connected to (a)   terminal.

The pieces to be carborized are to be pached in (a)   before loading it in the furnace

The threads are to be filled with clay while case hardening to (a)   of the threads.

Ceramics are materials consisting of (a)  

Organic materials are derived directly from (a)  

A metal is an (a)   substance

The Latin word of iron is

(a)  

Steel is an alloy of __________ and ___________.

(a)  

Cast iron is a product of (a)   .

The reduction of iron ore to pig iron is carried out in (a)   .

(a)   soft and it is used in cold work such as extrusion

(a)   has resistance to corrosion and high thermal conductivity.

Density is the ratio of mass by (a)   .

The resistance of a material to elastic deformation is called (a)   .

Springs has the property of (a)  

Glass comes under (a)   property

Unit of specific heat is (a)  

Tuyers in Blast furnaces are used for Suppling (a)   to the furance.

Cast iron is mainly produced by (a)   furnace

Malleable cast iron has the property of (a)  

Beseemer converter is used for manufacturing of (a)   .

Pure iron (a)  

In Grey cast iron most of the carbon is in (a)   form

In Meehanite cast iron, high duty cast iron included with (a)   acts as graphitiser

(a)   acts as denser giving for fine grain size

(a)   type of steel is widely used for railway springs.

The major alloying element in stainless steel is (a)  

Invar is the name of (a)   .

Hand taps are made of --------- material

(a)  

(a)   Used for leaf spring,coil spring etc.

Permanent magnets for loud speakers are made up of (a)  

(a)   contain alloying elements that enable it to be heat treated .

The A.I.S.I Code for High Carbon High Chromium Cold Work Tool Steel is (a)  

For making main body of Jigs and Fixtures (a)   is used

(a)   is the material used for making Punch & Die of a press tool

(a)   is the material for Cold Chisel

The major base metal present in brass is (a)  

In Aluminium-silicon alloy systems the silicon content can be

(a)  

Non ferrous metals are those which do not contain (a)   as a base

(a)   is used as a protective coating

The diamond pyramid hardness number (DPH) is (a)  

Fatigue testing is plotted as (a)   of cycles curve

To find non metal inclusions (a)   Test is used

Organic materials are those materials that are derived directly from (a)  

Polymers whose plasticity does not change with raise in temperature are (a)  

. To impart desired properties (a)   are added to polymers

To impart desired color to the finished products (a)   are added to polymers

Urea formaldehyde polymer is used for making (a)  

Which one among the following is used for making Telephones

(a)  

The raw materials presents in soda glass are (a)  

Borosilicate glasses are extensively used as (a)  

The common variety of glass is made from (a)  

Ceramic materials that can be made to piezoelectric materials are (a)  

In (a)   materials conduction & valance bands are over laps.

The characteristics temp at which a substance becomes super conductive depends on the strength of the (a)  

Hot rolling is usually carried out for manufacturing of (a)  

During cold working process_______and_________increases

(a)  

Some of the high melting alloys produced by powder metallurgy techniques are (a)