Why is it dangerous to have a coal fire burning with doors and windows closed ?2 4179
Why does a diamond cut glass?2 4302
Why is the sea water saline ?9 12646
Why it is advised to boil water before drinking ?1 3305
Why is the percentage of oxygen today the same as it was thousands years ago, even though the whole world inhals it?1 3089
Why would we all suffocate, if all the green plants were killed ?1 2604
Why are substances like caustic soda and calcium chloride called hygroscopic substances ?2 3531
Why is sodium preserved in kerosene oil ?3 12643
Why is a newly made quit warmer than an old one ?1 2539
What causes smoke to curl up into the air ?1 3430
Why does a dog hang out his tongue, when it is hot ?2 3619
Why dies thermos flask keep a hot liquid hot and a cold liquid cold ?1 2877
Why does oil thrown on rough sea make it calmer ?1 2367
Why is heat more oppressive on a damp hot day ?1 2231
Why is dew formed more readily on clear nights than on cloudy ones ?1 3070
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 is difference b/w "regio selectivity" & "sterio selectivity"
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?
Does domestic/household used kerosene oil which is available in blue color (In India) can change its color over the due course of time say 8-10 years if keeping in plastic bottle? If so, in which color it will be turned to change, yellow or transparent or any other color. Please provide me the reply with strong technical approach. Since it has been asked during an interview. Please reply fast. I will be thankful to you if anyone can provide the supporting journals/write-ups/reference to favour of response.
How BIS Decedied the LSF value 0.66-1.02 with calculation.
Why we use potassium dichromate in control of absorbance in uv region and copper sulphate in control of absorbance in visible region?
Why USP put two methods for tapped density? When I should use each one?
what is the relation between Total organic carbon and Chemical Oxygen demand?
what are the role of chemistry education in sustainable development
why we shrink our body during cold
which gas is used in preaparation of bit salt
What is difference between LVT and RVT Viscometer?
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?
why is their exotherm while addition of reducing agents in reduction reaction?