Introduction of Atomic Structure

Q. Henrys law establishes a relationship between ________ on the liquid and _________ of the gas dissolved.

1. mass, colour
2. temperature, mass
3. nature, temperature
4. pressure, mass

Q.

Who among these was the first to theorize the structure of atoms?

1. J.J Thomson

2. E. Goldstein

3. John Dalton

4. James Chadwick

Q.

Match the entries given in column A with appropriate ones from column B
$$\begin{array}{cc}\text{Column A}& \text{Column B}\\ \text{(A) Invisible atoms}& \text{(a) Rutherford's atomic model}\\ \text{(B) Mass of an atom is concentrated at the centre}& \text{(b) Dalton's atomic theory}\\ \text{(C) Energy levels}& \text{(c) Thomson's atomic model}\\ \text{(D) Plum pudding model}& \text{(d) Bohr's model}\end{array}$$

1. A-b B-a C-c D-d

2. A-a B-b C-d D-c

3. A-b B-c C-d D-a

4. A-b B-a C-d D-c

Q. John Dalton stated that atoms are indivisible.

1. False
2. True

Q. Which amongst the following gases can be classified as compound?

1. Oxygen
2. Nitrogen
3. Hydrogen chloride
4. Chlorine

Q. A scientist while working on an experiment found a compound with chemical formula $Fe(HC{O}_3{)}_3$. What is its atomicity?

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

Q.

According to __________, during a chemical reaction, the total mass of the products remains equal to that of reactants

1. avogadro's law

2. law of constant proportions

3. law of conservation of mass

4. law of multiple proportions

Q. Which amongst the following is formed when two or more elements are chemically bonded together?

1. Compound
2. Mixture
3. Element
4. Atom

Q. Which is the positive ion in sodium sulphate?

1. Sulphide ion
2. Sodium ion
3. Sulphate ion
4. Sulphite ion

Q. Chemical formula of a compound is determined on the basis of __________ of its constituents.

1. number of neutrons
2. valency
3. atomic mass
4. atomic size