Download App

Carbon and its Compounds — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceCarbon and its Compounds3 Marks
Question
Draw the electron dot structure of ethyne and also draw its structural formula.
✓

Answer

Ethyne is a hydrocarbon with molecular formula C2H2. Here two carbon atoms are bonded together by a triple covalent bond and one hydrogen atom is bonded with each carbon atom through a single covalent bond. Hence the electron dot structure of ethyne molecule can be representes as:

Structural formula of ethyne is: H ─ C ≡ C ─ H.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the questions.[Che-3M]" from Carbon and its Compounds→Carbon and its Compounds — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

Write the name and formula of one salt each which contains:
  1. Two molecules of water of crystallisation.
  2. Tive molecules of water of crystallisation.
  3. Ten molecules of water of crystallisation.
→
List three advantages each of:
  1. Exploiting resources with short term aims.
  2. Using a long term perpective in managing our natural resources.
→
Identify the type of reaction: 

$\text{MnO}_2+4\text{HCl}\rightarrow\text{MnCl}_2+2\text{H}_2\text{O}+\text{Cl}_2$

→
Here are some results of solutions tested with universal indicator paper:
  1. Sulphuric acid: Red
  2. Metal polish: Dark blue
  3. Washing-up liquid:
  4. Yellow Milk of magnesia:
  5. Light blue Oven cleaner:
  6. Purple Car battery acid: Pink
Arrange the solutions in order of their increasing pH values (starting with the one with the lowest pH).
→
The atomic number of an element is 19.
  1. Write the electronic configuration of this element and determine (i) the valency of this element, and (ii) whether this element is a metal or a non-metal.
  2. Write the formula of the oxide of this element.
  3. Is this element more reactive or less reactive than Na (atomic number 11)? Justify your answer giving example.
→
Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it, as shown in figure below.
  1. What will be the action of gas on:
  1. Dry litmus paper?
  2. Moist litmus paper?
  1. Write a balanced chemical equation for the reaction taking place.
→
Explain the following chemical properties of acids with the help of balanced chemical equations only.
  1. When an acid reacts with a metal carbonate.
  2. When an acid reacts with a metal bicarbonate.
  3. When an acid reacts with a metal oxide.
→
A solution of potassium chloride when mixed with silver nitrate solution, an insoluble white substance is formed. Write the chemical reaction involved and also mention the type of the chemical reaction?
→
What happens when nitric acid is added to egg shell?
→
Write the name and the structural formula of the compound formed when ethanol is heated at 443 K with excess of conc. $\text{H}_{2}\text{SO}_{4}$ State the role of conc. $\text{H}_{2}\text{SO}_{4}$ in this reaction. Write chemical equation for the reaction.
→