Related Questions

A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be
A More
B Less
C Same
D Data insufficient; can't be predicted
Read the paragraph and answer the question Viruses are living organisms.We may consider them regular chemical molecule since they have normal atomic structure, but on the other hand, we must also consider them as being alive since they are able to multiply unlimited quantities Viruses are alive because they
A need warmth
B live
C have a complex atomic structure
D multiply
The gypsys are a tribe of strange people. They do not have any fixed home but wander about from place to place and live in tents. they were originally natives of India. But as they reached England from Egypt ,the English took them from Egyptians. this is why they came to be called gypsys. they were beloved to possess strange powers. they could tell your fortune by reading the palm of your hand. it was thought they stole little children to train them in their way of life. whenever a child got lost it was thought that it has been carried away by gypsys so they were arrested and sent for trial. but this attitude towards the Gypsy has gradually changed.The gypsies are people who ---
A have a settled way of life
B came originally from Egypt to England
C are always on the move
D steal children to train them in the way of life
Which of the following are amongst the few carbon-containing compounds not classified as organic?
A Methane
B Nucleic acids
C Cyanides
D Propane
কোন বিক্রিয়ার সাহায্যে জৈব যৌগে কার্বন সংখ্যা বৃদ্ধি করা যায়? (By which reaction the number of carbon can be increased in organic compounds?)
A উটর্জ-ফিটিগ বিক্রিয়া (Wurtz-Fittig reaction)
B হফম্যান বিক্রিয়া (Hofmann recation)
C উটর্জ বিক্রিয়া (Wurtz reaction)
D কোব বিক্রিয়া (Kolbe reaction)
Bob just filled his car's gas tank with 20 galions of gasohol , a mixture consisting of 5% ethanol and 95% gasoline. If his car runs best on a mixture consisting of 10% ethanol and 90% gasoline, how many gallons of ethanol must he add into the gas tank for his car to achieve optimum performance?
A 20/19
B 10/9
C 9/10
D 1
The correct relation between theoretical oxygen demand (TOD), Biochemical oxygen demand (BOD) and Chemical oxygen demand (COD) is given by
A TOD > BOD > COD
B TOD > COD > BOD
C BOD > COD > TOD
D COD > BOD > TOD
Every atom of Carbon-di-oxide contains - Oxygen and - Carbon.
A 1, 2
B 2, 1
C 1, 1
D 2, 2
They are probably the simplest and the smallest living organisms possessing cellular organisation.
A Viruses
B Fungi
C Mosses
D Bacteria
Which of the following elements is found in all organic compounds?
A Carbon
B Calcium
C Nitrogen
D Oxygen

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