Permanent hardness of water may be removed by the addition of 1 Alum 2 Sodium carbonate 3 Lime 4 Potassium permanganate3 10125
The purest form of iron is 1 Steel 2 Cast iron 3 Pig iron 4 Wrought iron20 54686
Of the following metals which, one pollutes the air of a big city? 1 Copper 2 Chromium 3 Lead 4 Cadmium3 10861
Which of the following is the most stable element? 1 Uranium 2 Hydrogen 3 Oxygen 4 Lead5 8529
Which of the following is a good nuclear fuel? 1 Uranium-238 2 Neptunium-239 3 Thorium-236 4 Plutonium-2398 18167
Which type of fire extinguisher is used for petroleum fire? 1 Foam type 2 Soda acid type 3 Powder type 4 None of these8 19396
Which of the following is commonly called a ‘polyamide’? 1 Rayon 2 Orlon 3 Terylene 4 Nylon3 9497
Rusting of iron involves 1 Oxidation 2 Reduction 3 Displacement 4 Decomposition5 25664
A mixture of water and alcohol can be separated by 1 Filtration 2 Evaporation 3 Distillation 4 Decantation4 22194
Cooking oil can be converted into vegetables ghee by the process of 1 Oxidation 2 Hydrogenation 3 Distillation 4 Crystallization4 14913
The chemical used as a ‘fixer’ in photography is 1 Borax 2 Sodium thiosulphate 3 Sodium sulphate 4 Ammonium persulphate1 8592
Study of life in outer space is called A) Endobiology B) Exobiology C) Entrobiology D) Neobiology15 29951
Activity of an enzyme can be modulated by change of [a] pH [b] Light [c] Humidity [d] Rainfall1 3987
What is R2R Cycle?
Functions call by reference and call by value. i want the diff b/n these 2 and how will be the script for this?in which situation we use these 2..?pls explain me clearly
CAN ANY ONE TELL ME WHEN WILL CONDUCT ASSISTANT MOTOR VEHICLE INSPECTOR /RTO APPLICATIONS WILL RELEASE
Comment,Datatypes are unlimited
Explain the concept of segmentaion.
How to calculate the External Resistance required for 60HP slipring motor in case no any data of the Motor is available???
what is e-tester?
What are the different Types of Polling in RLC A.M Mode
How you would be an asset to this organization?
why specifically inited states ?
For the requirement of a furnace of temperature range up to 1200 oC using silicon carbide rods, What is the required rate of transformer needed (please do it with all details)?
What is min thickness,min grade of conc & age of PQC ?
on burning normaly wich parts of our body geting less dameg? why?
What do you know about transfection of Hek 293A cells ?
sir,iam applied rrb chennai for the post of junier engineer,i need objective type question book,please refer the suitable book,author and publication.