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
Advertisements
उत्तर
urea
Urea is the organic compound prepared by Wohler from an inorganic compound called ammonium cyanate.
APPEARS IN
संबंधित प्रश्न
Give appropriate scientific reasons for Carbon tetrachloride does not conduct electricity.
What type of bonds are present in H2 molecule? Draw their electron-dot structures.
What type of bonds are present in Cl2 molecule? Draw their electron-dot structures.
Give one example of a molecule containing a single covalent bond.
Give two general properties of ionic compounds and two those of covalent compounds.
Write two points of difference in the structures of diamond and graphite.
What is the difference between ionic compounds and covalent compounds?
Explain the following term with example.
Unsaturated hydrocarbon
Give examples for the following:
Two gaseous non polar compounds.
Acids dissolve in water to produce positively charged ions. Draw the structure of these positive ions.
Explain the following:
Polar covalent compounds conduct electricity?
Give an example of the covalent bond formed by
(i) Similar atoms (ii) Dissimilar atoms
Answer the following question.
What is methane? Draw its electron dot structure. Name the type of bonds formed in this compound. Why are such compounds:
(i) poor conductors of electricity? and
(ii) have low melting and boiling points? What happens when this compound burns in oxygen?
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{..}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ \phantom{..}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C- C- H}\\ \phantom{.}|\phantom{....}|\phantom{....}|\\ \ce{H - C - H}\\ |\\\ce{H}\end{array}\] |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Give an example for each of the following statement.
A compound in which three covalent bonds are formed.
The correct structural formula of butanoic acid is -
Which of the following compounds of carbon does not consist of ions?
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
