Explanation

Isotopes are atoms with different atomic masses that have the same atomic number.

The atoms of different isotopes are atoms of the same chemical element; they differ in the number of neutrons in the nucleus.

Isotopes:

• The isotopes are a group of atoms that have the same atomic numbers but different mass numbers.
• That means all isotopes of an element have the same number of protons in their atomic nuclei and the same number of electrons in the electron cloud surrounding the nucleus.

Difference between isotopes

• Isotopes differ in the total number of neutrons present in their respective atomic nuclei.
• Thus they have different mass numbers.
• Different isotopes of the same element are having different masses.
• Protium (1 proton,1 electron, and no neutrons), Deuterium (1 proton, 1 electron, and 1 neutron), and Tritium (1 proton, 1 electron, and 2 neutrons) are examples of isotopes of Hydrogen.

Explanation

Explanation

Adept means ماہر

Skilled means ماہر

Proficient means کسی کام میں ہنر مند یا اہل

Explanation

1 Kg is equal to 1000 grams.

1 Kg is equal to 2.2 pounds.

Explanation

Carolus Linnaeus developed the binomial nomenclature system for naming organisms.

Each species is given a two-part Latin name: Genus and Species (e.g., Homo sapiens).

Explanation

Explanation

Correct Narration Change:

The original sentence ("Please don't go away," he said to me.) is an implored request (polite command).

In indirect speech, "said to" changes to "requested" (for polite pleas) or "told" (neutral).

"Don’t go away" becomes "not to go away" (infinitive structure in reported speech).

Explanation

Dr. Umar bin Muhammad Daudpota was born on 25 March 1896 (or 1 June 1897) in the village of Talti.

It is located in Sehwan Sharif, Dadu District (now District Jamshoro), British India (present‑day Sindh, Pakistan).

Explanation

• A poem of 14 lines is called a sonnet.
• It is a short lyric poem typically written in iambic pentameter.
• There are 4 primary types of sonnets: Petrarchan, Shakespearean, Spenserian and Miltonic.
• A sonnet usually consists of two parts: an eight-line section (the octet) followed by a six-line section (a sestet).

Explanation

To find 12% of 400:

Step 1: Calculate 12% of 400.

12% of 400 = (12 / 100) × 400

= 0.12 × 400

= 48