Home
Class 12
CHEMISTRY
Which of the following are the advantage...

Which of the following are the advantages of using oxygen in place of air in steel industry
a) It gives more pure product
b) The surface is free from nitrides
c) It makes procedure faster, that is more product on
d) Larger quantities can be handled

A

a,b,c

B

b & d only

C

b,c,d

D

a,b,c,d

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PRINCIPLES OF METALLURGY

    AAKASH SERIES|Exercise Objective Exercise - 1 (Extration of some metals)|25 Videos

  • PRINCIPLES OF METALLURGY

    AAKASH SERIES|Exercise Objective exercise -2 (Occurance and general principles)|21 Videos

  • PRINCIPLES OF METALLURGY

    AAKASH SERIES|Exercise Objective Exercise - 1 (Refining of metals)|10 Videos

  • PRACTICAL CHEMISTRY

    AAKASH SERIES|Exercise PRACTICE SHEET-5 (Integer answer Type questions)|6 Videos

  • PROTEINS AND NUCLEIC ACIDS

    AAKASH SERIES|Exercise PRACTICE SHEET - 4|30 Videos

Similar Questions

Explore conceptually related problems

In which of the following substance speed of diffusion is more A.Smell of Petrol B.Smell from flowers C.Smell from Naphthalene balls D.Gas leaked from gas cylinder

Regarding elasticity which of the following statements are correct? a) the point where the elasticity ends and plasticity starts is called yield point b) breaking stress depends on the area of cross section c) the value of poisons ratio can not be greater than 0.5 d) air is more elastic than water

Which of the following are correct? a) PCRs are defined as the organisms, which carry foreign genes b) SCID is a group of rare genetic disorders c) Cloning is the production of GMOs, eg, Flavr-savr tomato d) The bacteria use restriction endonucleases to destroy the DNA of invading foreign viruses

Which of the following statements are correct (a) the boiling point of a solution is greater than pure solvent (b) the temperature where the vapour pressure of liquid equals to atmospheric pressure is called its boiling point (c) the vapour pressure of pure solvent is less than the vapour pressure of solution containing non volatile solute. (d) the temperature of liquid remained in the container after evaporation is more than before the evaparation

Which of the following statements are correct related to metallurgy? (A) In electrolytic refining of copper, pure Cu is used as anode. (B) Zone refining is based on the principle that impurities are more soluble in the melt than in the solid state of the metal. (C) (C) TiI_4 upon heating will give pure Ti. (D) Very pure Zr may be obtained by galvanisation (E) In copper smelting, hot air is used to convert to CuSO_4 The correct answer is

Which of the following is an eco friendly act (A) Dumping biodegradable wastes in pits, (B) Sorting out wastes as bio and non bio degradable wastes, (C) Use more and more plastic, (D) Burn the house hold waste

A piece of charcoal and a piece of shining steel of the same area are kept for a long time in an open lawn in bright sun. a) The steel will absorb more heat than the charcoal b) The temperature of the steel will be higher than that of the charcoal c) If both are picked up by bare hands, the steel will be left hotter than the charcoal d) If the two are picked up from the lawn and kept in a cold chamber, the choreal will lose heat at a faster rate than the steel

Which two of the following changes (1-4) usually tend to occur in the plain dwellers when they move to high altitudes? (a) Increase in RBC size (b) Increase in RBC production (c) Increase in breathing rate (d) Increased oxygen-binding capacity of haemoglobin