How Do Metals and Nonmetals React

Q. Metals are structures of atoms held together by metallic bonds, which is the force of attraction between X and Y. Identify X and Y.

1. Valence shell electrons and the metal ions
2. Inner shell electrons and the metal ions
3. Valence shell electrons and inner shell electrons
4. Metal electrons and metal ions

Q.

In a metallic substance, the metal ions are held together by a sea of electrons freely roaming between all the ions as shown below. Where do you think this sea of electrons has been accumulated from?

1. All the atoms of the metal
2. Only half of all the atoms of the metal
3. Not the atoms of the metal but from an outside source
4. Only one fourth of all the atoms of the metal

Q. Hydrogen gas $\left(H_2\right)$ is used as fuel in rockets and space shuttles. The two hydrogen atoms in $H_2$ gas are bonded to each other by ___.

1. transfer of electrons
2. gaining of electrons
3. forming ions
4. sharing an electron pair

Q. When sulphur (S) reacts with oxygen gas (O₂), it produces:

1. Basic oxides
2. Acidic oxides
3. Amphoteric oxides
4. A salt

Q. What kind of product is formed when a non-metal reacts with $O_2$ gas?

1. Acidic oxide
2. Basic oxide
3. Amphoteric oxide
4. Salt

Q. What kind of product is formed when a non-metal reacts with $O_2$ gas?

1. Acidic oxide
2. Basic oxide
3. Amphoteric oxide
4. Salt

Q. Which of the following are characters of a frog but not of a rock?
i) Respiration
ii) Reproduction
iii) Adaptation
iv) Excretion

1. (ii) and (iv) only
2. (i), (ii), (iii) and (iv)
3. (i) and (ii) only
4. (i), (ii) and (iv) only

Q. Statement I: Energy is required by every living organism to survive and carry out different activities.

Statement II: Living organisms obtain this energy by nutrition.

Statement III: Nutrition alone is enough to provide the required energy to the organisms.

Which of these statement(s) is/are correct?

1. I and III
2. I, II and III
3. I and II
4. II and III

Q.

Shreya touched a hot kettle and quickly pulled her hand away. Which characteristic is proved by the given statement?

1. Response to stimuli

2. Respiration

3. Growth

4. Reproduction

Q. Which one of the following is not associated with reproduction?

1. A dog giving birth to a puppy.
2. A seed growing into a plant.
3. A new leaf coming out of a tree branch.
4. Chick hatching from an egg.