Advertisements
Advertisements
प्रश्न
The organic compound prepared by Wohler from an inorganic compound called ammonium cyanate was:
(a) glucose
(b) urea
(c) uric acid
(d) vinegar
उत्तर
urea
Urea is the organic compound prepared by Wohler from an inorganic compound called ammonium cyanate.
APPEARS IN
संबंधित प्रश्न
Give reason why carbon compounds are generally poor conductors of electricity.
State the reason why carbon can neither form \[\ce{C^4+}\] cations nor \[\ce{C^4−}\] anions but forms covalent compound.
State the reason to explain why covalent compounds "have low melting and boiling points."
Buckminsterfullerene is spherical molecule in which 60 carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon atoms.
How many pentagons of carbon atoms are present in one molecule of buckminsterfullerene?
What type of bonds are present in hydrogen chloride and oxygen?
Fill in the blank in the following sentence:
The number of single covalent bonds in C2H2 molecule are ...........
Give one example, state what are covalent compounds?
Explain why, ionic compounds conduct electricity in solution whereas covalent compounds do not conduct electricity.
Friedrich Wohler converted an inorganic compound into an organic compound in the laboratory.
Write the name and formula of organic compound formed.
Draw the electron-dot structure of NH3 and state the type of bonding.
State any two uses of graphite.
An element A has 4 valence electrons in its atom whereas element B has only one valence electron in its atom. The compound formed by A and B does not conduct electricity. What is the nature of chemical bond in the compound formed? Give its electron-dot structure.
What are the conditions necessary for the formation of covalent molecules?
(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
In the liquid state, X will
Electrons are getting added to an element Y:
which electrode will Y migrate to during the process of electrolysis?
Potassium (Atomic No. 19) and chlorine (Atomic No. 17) react to form a compound. On the basis of electronic concept, explain
(i) oxidation
(ii) reduction
(iii)oxidising agent
(iv)reducing agent
Fill in the blank and rewrite the completed statement:
Covalent compounds are generally soluble in _________ solvents.
Which of the following statements are correct for carbon compounds?
- Most carbon compounds are good conductors of electricity.
- Most carbon compounds are poor conductors of electricity.
- Force of attraction between molecules of carbon compounds is not very strong.
- Force of attraction between molecules of carbon compounds is very strong.
Which of the following is the formula of Butanoic acid?
Assertion (A): Melting point and boiling point of ethanol are lower than that of sodium chloride.
Reason (R): The forces of attraction between the molecules of ionic compounds are very strong.
