Related Questions

Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is
A 12
B 36
C 54
D 68
Invar tapes used for measuring base lines, is made of nickel-iron alloy containing nickel
A 24 %
B 36 %
C 40 %
D 60 %
Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles (i.e., froth), which will hold the ore particles, but it does not affect the floatability of minerals. Which of the following is not used as a frother?
A Cresylic acid
B Xanthaies
C Pine oil
D All of the above
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
A liquation
B leaching
C levigation
D magnetic separation
Ore concentration by froth floatation utilises the __________ of ore particles.
A Density difference
B Wetting characteristics
C Terminal velocities
D None of these
Leaching of uranium ore and gold ore is done in
A Centrifugal extractor
B Pachuka tanks
C Bollman extractor
D None of these
Assume that all users are members of the ACE domain and that most of the resources exist in the PUBS and CAD domains. You are a user with administrator rights in all domains. How would you allow users to access all of the resources, with a minimum set of trust relationships?
A Establish one-way trust relationships in which: PUBS trusts ACE CAD trusts ACE
B Establish one-way trust relationships in which: ACE trusts PUBS ACE trusts CAD
C Establish one-way trust relationships in which: PUBS trusts ACE CAD trusts PUBS •
D Establish one-way trust relationships in which PUBS trusts ACE ACE trusts CAD
E None of the above
Arman wanted to have Tk. 39,200 as interest after 5 years. He has invested an amount in an account for 1 year at 8% interest rate. From the 2nd year, he invested the principal amount in another account offering 10% interest for 3 years. At the beginning of the fifth year he invested the Principal amount in another account at the rate of 11%. What was the principal amount? (assume simple interest rate)
A Tk. 50,000
B Tk. 80,000
C Tk. 70,000
D Tk. 90,000
E None of them
Which of the following groups of states has the largest deposits of iron ore?
A Andhra Pradesh and Karnataka
B Bihar and Orissa
C Madhya Pradesh and Maharashtra
D West Bengal and Assam
In which of the following states maximum iron ore is found ?
A FeCO3
B Fe2O3
C Fe3O4
D FeS2

Next steps