Molecules and Atomicity

Q. What is the atomicity of sulphuric acid?

1. $6$
2. $7$
3. $3$
4. $8$

Q. An example of a diatomic molecule is:

1. Helium
2. Ammonia
3. Hydrogen
4. Water

Q. If it happens that Swetha discovers a new element apart from known elements and names after her name, write the possible and accepted symbol for that element?

Q. What is a mixture, and how is it different from a compound?

Q. Name the terms for the following:
(c) The particles of matter which may or may not have independent existence.

Q. Find the ratio by mass of the combining elements in the $N{H}_3$.

1. $1:3$
2. $1:13$
3. $14:3$
4. none of these

Q.

A molecule should:

1. electrically neutral.

2. should contain two or more atoms.

3. The atoms must be combined with chemical bonds.

4. All the given options are correct.

Q.

A scientist found a new compound Y while working on a new experiment.

He represented the compound Y as $Fe(HC{O}_3{)}_3$. What is its atomicity?

1. 16
2. 6
3. 8
4. 15

Q. Three test tubes contains different solutions and are labelled as A, B and C. The table below shows the observations when red and blue litmus papers were dipped in these test tubes.
Analyse the table given below and choose the correct options from the following.

$\begin{array}{cccc}& \text{Test tube A}& \text{Test tube B}& \text{Test tube C}\\ \text{Red Litmus}& \text{No change}& \text{No change}& \text{No change}\\ \text{Blue Litmus}& \text{Red}& \text{No change}& \text{Red}\end{array}$

1. The sample in test tube B is neutral
2. The sample in test tube C is acidic
3. The sample in test tube A is neutral
4. The sample in test tube A is acidic

Q. Write the name. chemical formula and valency of any three monatomic ions