Which among the following liquids shows convex meniscus in a glass tube?
Which among the following liquids shows convex meniscus in a glass tube?
The correct option is D Carbon tetrachloride
Explanation for Correct option:
D)The cohesive forces is the force between liquid molecules dominate in a molecule than the adhesive forces which is the force between liquid and the container, then the liquid shows convex meniscus.
Carbon tetrachloride is a non-polar molecule and covalent whereas glass is made of silicates which is polar covalent in nature and hence, the interactions between Carbon tetrachloride and glass are less and hence shows lower meniscus.
Explanation for Incorrect options:
A) Water is a polar covalent compound and shows high interaction between water molecules due to H bonding and hence, shows concave meniscus.
B) Hydrochloric acid is a polar covalent compound and shows high interaction between HCl molecules due to polar nature and hence, shows concave meniscus.
C) Alcohol is a polar covalent compound and shows high interaction between water molecules due to H bonding and hence, shows concave meniscus.
Hence, (D) is the correct option-Carbon tetrachloride shows convex meniscus in the glass tube.
Carbon tetrachloride
Explanation for Correct option:
D)The cohesive forces is the force between liquid molecules dominate in a molecule than the adhesive forces which is the force between liquid and the container, then the liquid shows convex meniscus.
Carbon tetrachloride is a non-polar molecule and covalent whereas glass is made of silicates which is polar covalent in nature and hence, the interactions between Carbon tetrachloride and glass are less and hence shows lower meniscus.
Explanation for Incorrect options:
A) Water is a polar covalent compound and shows high interaction between water molecules due to H bonding and hence, shows concave meniscus.
B) Hydrochloric acid is a polar covalent compound and shows high interaction between HCl molecules due to polar nature and hence, shows concave meniscus.
C) Alcohol is a polar covalent compound and shows high interaction between water molecules due to H bonding and hence, shows concave meniscus.
Hence, (D) is the correct option-Carbon tetrachloride shows convex meniscus in the glass tube.
