Download App

Carbon and its Compounds — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceCarbon and its Compounds1 Mark
MCQ
Ethane, with the molecular formula C2H6 has:
  • A
    6 covalent bonds.
  • B
    7 covalent bonds.
  • C
    8 covalent bonds.
  • D
    9 covalent bonds.
✓

Answer

  1. 7 covalent bonds.

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 "M.C.Q-[Che-1M]" 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

Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?
  1. Displacement reaction.
  2. Precipitation reaction.
  3. Combination reaction.
  4. Double displacement reaction.
→
A solution turns phenolphthalein indicator pink. The most likely pH of this solution will be:
  1. 6
  2. 4
  3. 9
  4. 7
→
In addition to iron, stainless steel contains:
→
Plaster of Paris is prepared by heating one of the following to a temperature of 100°C. This is:
  1. CaSO3.2H2O
  2. CaCl2.2H2O
  3. CaCO3.2H2O
  4. CaSO4.2H2O
→
Which of the following salts will give an aqueous solution having pH of almost 7?
→
Three beakers labelled as A, B and C each containing 25mL of water were taken. A small amount of NaOH, anhydrous CuSO4 and NaCl were added to the beakers A, B and C respectively. It was observed that there was an increase in the temperature of the solutions contained in beakers A and B, whereas in case of beaker C, the temperature of the solution falls. Which one of the following statement (s) is (are) correct?
  1. In beakers A and B, exothermic process has occurred.
  2. In beakers A and B, endothermic process has occurred.
  3. In beaker C, exothermic process has occurred.
  4. In beaker C, endothermic process has occurred.
  1. Only 1
  2. Only 2
  3. 1 and 4
  4. 2 and 3
→
Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is:
→
Which of the following statements about the given reaction are correct?
3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g)
  1. Iron metal is getting oxidised.
  2. Water is getting reduced.
  3. Water is acting as reducing agent.
  4. Water is acting as oxidising agent.
  1. 1, 2 and 3
  2. 3 and 4
  3. 1, 2 and 4
  4. 2 and 4
→
During extraction of metals, electrolytic refining is used to obtain pure metals. Material which will be used as anode, for refining of silver metal by this process, is:
→
On the basis of the sequence of the given reactions identify the most and least reactive elements:
X + YA → XA + Y ...(i)
X + YB → XB + Y ...(ii)
Z + XA → ZA + X
→