Explanation

According to Jean Piaget, children learn and adapt through two key mental processes:

Assimilation – integrating new information into existing cognitive schemas.

Accommodation – adjusting existing schemas to fit new information.

Explanation

A covalent bond forms when two atoms share one or more pairs of electrons.

This type of bonding typically occurs between non-metal atoms to achieve stable electron configurations.

Explanation

The notation n√x^m can be rewritten in power form as:

(x^m)^(1/n) = x^(m/n)

Explanation

(1+2⁰+3²+4⁰) / (5+6⁰):

(1 + 1 + 9 + 1) / (5 + 1)

= 12 / 6

= 2

Explanation

Positive sign (+) indicates profit, so +5 means profit of Rs. 5.

Negative sign (−) indicates loss, so −5 means loss of Rs. 5.

Explanation

When dilute acids react with many metals, they produce hydrogen gas.

For example:

2HCl + Zn → ZnCl2 + H2.

Explanation

Density = Mass / Volume

= 16 g / 160 cm³

= 0.1 g/cm³

Given the mass of 16 g and the volume of 160 cm³, the density of the piece of wood is 0.1 g/cm³.

Explanation

Interest = Principal × Rate × Time

= 250,000 × 0.12 × 4

= 250,000 × 0.48

= 120,000

Explanation

Talented means باصلاحیت

Incompetent means نااہل

Explanation

Atomic mass = number of protons + number of neutrons → 2 + 1 = 3.

Electrons do not contribute significantly to atomic mass.