Answer: Option (c) is the correct answer.
Explanation:
HF is a weak acid and not a strong acid. This is because fluorine is a highly electronegative atom and when it combines with a hydrogen atom then it will attract the valence electron of hydrogen atom more towards itself.
As a result, it will not dissociates easily to give hydrogen ion. Hence, it acts as a weak acid.
A neutralization reaction is defined as a reaction in which an acid reacts with a base to give salt and water. For example, ![HCl + NaOH \rightarrow NaCl + H_{2}O](https://tex.z-dn.net/?f=HCl%20%2B%20NaOH%20%5Crightarrow%20NaCl%20%2B%20H_%7B2%7DO)
It is true that, spectator ions "appear in the total ionic equation for a reaction, but not in the net ionic equation".
Titration is defined as a process in which concentration of an unknown solution is determined using a solution of known concentration.
Thus, we can conclude that the statement HF, HCl, and HNO3 are all examples of strong acids, is false.
Answer of question 1 is When the buoyant force is greater than the force of gravity
answer of question 2 is true
answer of question 3 is the object is more dense than the fluid
answer of question 4 is you can't because steel will always sink since it is more dense than water
answer of question 5 is it has a low density
<u>Answer:</u>
<em>The option which is true to the knowledge is second option.
</em>
<u>Explanation:</u>
The second option tells us that the attraction between the molecules is weak and movement of particles is less. Hence it makes the state x to be liquid because in case of liquid above the given fact is true to the knowledge.
While the other options are contradicting in nature for example if it is a solid that reaction will be strong and the movement will be very weak. And in case of gas that reaction will be very weak and movement will be very strong.