Why is it dangerous to have a coal fire burning with doors and windows closed ?2 4479
Why does a diamond cut glass?2 4542
Why is the sea water saline ?9 13139
Why it is advised to boil water before drinking ?1 3476
Why is the percentage of oxygen today the same as it was thousands years ago, even though the whole world inhals it?1 3221
Why would we all suffocate, if all the green plants were killed ?1 2716
Why are substances like caustic soda and calcium chloride called hygroscopic substances ?2 3797
Why is sodium preserved in kerosene oil ?3 13021
Why is a newly made quit warmer than an old one ?1 2671
What causes smoke to curl up into the air ?1 3575
Why does a dog hang out his tongue, when it is hot ?2 3768
Why dies thermos flask keep a hot liquid hot and a cold liquid cold ?1 3002
Why does oil thrown on rough sea make it calmer ?1 2509
Why is heat more oppressive on a damp hot day ?1 2334
Why is dew formed more readily on clear nights than on cloudy ones ?1 3199
In the calculation of calorific value of any fuel why the latent heat of vap. of water is taken as 587 kj/mol whereas actually it is 540kj/mol?
What can you contribute to the company?
hi i got i 20 from sacred heart university u.s.a.i got good tofel score and my gre is score is very poor.my university requirement is only tofel.i completed my b.pharmacy in 2009 so i got 1 year gap is their chances to reject visa?what i have to do i was very tensed.how to sought out my problem
what are the role of chemistry education in sustainable development
Arrange by acidic values : phenol, nitrotolouene and o-cresol?
Why USP put two methods for tapped density? When I should use each one?
What is difference between LVT and RVT Viscometer?
describe the lewis dot structure of Mg2+?
can we Consider the Purity threshold and Purity angle in place of peak purity for the specificity test for method verification
What is the difference between volumetric solutions and test solutions
which gas is used in preaparation of bit salt
SET Examination Previous Questions
Cholesterol is a compound suspected of causing hardening of the arteries. The formula of cholesterol is C27H46O. a. A sample of cholesterol is isolated from the arterial lining of a 60-year-old American male. What is the formula of this compound? b. Cholesterol is extracted from a chicken’s egg. What is the formula of this compound?
why is their exotherm while addition of reducing agents in reduction reaction?