Related Questions

Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of
A Calcium sulphate
B Sodium chloride
C Sodium sulphate
D Magnesium chloride
Magnesium and calcium __________ cause temporary hardness of water.
A Carbonates
B Bicarbonates
C Phosphates
D Sulphates
The mineral containing both magnesium and calcium is
A magnesite
B calcite
C carnallite
D dolomite
The process of removing the burnt gases from the engine cylinder by the fresh charge coming into the engine cylinder from the crankcase, is known as
A Cleaning
B Priming
C Scavenging
D Detonation
In an internal combustion engine, the process of removing the burnt gases from the combustion chamber of the engine cylinder is known as
A Scavenging
B Detonation
C Supercharging
D Polymerisation
Fill in the gaps : As water passes -----various rocks, calcium fluoride gets in the water.
A of
B with
C on
D none of these
In a certain code 786 means study very hard' 958 means hard work pays and 645 means study and work which of the following is the code for very?
A 8
B 6
C 7
D Can't be determined
Hardly can I work hard if the hard work does not demand a hardly health and hardness of mind. Which part of speech in the underlined word?
A Noun
B Adjective
C Adverb
D Verb
He works hard . Here 'hard' is a/an
A noun
B adjective
C adverb
D pronoun
He can work hard. Here hard is used as ___
A adjective
B adverb
C noun
D verb

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