Advertisements
Advertisements
प्रश्न
Which of the following has a triple bond as well as single bonds?
(a) ethene
(b) methane
(c) ethyne
(d) nitrogen
Advertisements
उत्तर
(c) ethyne
An ethyne molecule 
contains a triple bond between two carbon atoms and two single bonds between carbon and hydrogen atoms.
APPEARS IN
संबंधित प्रश्न
Name the following:
The property of element by virtue of which atoms of the element can link to each other in the form of a long chain or ring structure.
Why are most carbon compounds poor conductors of electricity?
What would be the electron-dot structure of carbon dioxide which has the formula CO2?
What type of bonds are present in water molecule? Draw the electron-dot structure of water (H2O).
Why is diamond used for making cutting tools (like glass cutters) but graphite is not?
Explain why, diamond can be used in rock drilling equipment but graphite cannot.
Two non-metals combine with each other by the sharing of electrons to form a compound X.
(a) What type of chemical bond is present in X?
(b) State whether X will have a high melting point or low melting point.
(c) Will it be a good conductor of electricity or not?
(d) Will it dissolve in an organic solvent or not?
The electronic configurations of three elements X, Y and Z are as follows:
| X | 2, 4 |
| Y | 2, 7 |
| Z | 2, 1 |
(a) Which two elements will combine to form an ionic compound?
(b) Which two elements will react to form a covalent compound?
Give reasons for your choice.
A solid element X has four electrons in the outermost shell of its atom. An allotrope Y of this element is used as a dry lubricant in machinery and also in making pencil leads.
(a) What is element X?
(b) Name the allotrope Y.
(c) State whether allotrope Y is a good conductor or non-conductor of electricity.
(d) Name one use of allotrope Y (other than lubrication and pencil leads)
(e) Name two other allotropes of element X.
Explain the Structural isomerism term with example.
Observe the straight chain hydrocarbons given below and answer the following
questions :
i) Which of the straight chain compounds from A and B is saturated and unsaturated straight chains?
ii) Name these straight chains.
iii) Write their chemical formulae and number of – CH2 - units.
Acids dissolve in water to produce positively charged ions. Draw the structure of these positive ions.
An element L consists of molecules.
Why L is heated with iron metal, it forms a compound FeL. What chemical term would you use to describe the change undergone by L?
Name two carbon compounds used in day-to-day life.
From the following hydrocarbon _______ is the cyclic hydrocarbon.
Write an Explanation.
Alkane
Give an example for each of the following statement.
Formation of coordinate covalent bond between NH3 ➝ BF3 molecules
Which of the following compounds of carbon does not consist of ions?
The correct structural formula of butanoic acid is
The electron dot structure of chlorine molecule is:
