Explanation

Parliamentarian ماہر پارلیمانی امور

An important word for spelling asks in previous exams.

• Lieutenant
• Brigadier
• Parliamentarians
• Colonel

Explanation

• An improper fraction is a fraction where the degree of the numerator (the top number) is greater than or equal to the degree of the denominator (the bottom number).
• Examples include fractions like 3/2, 5/4, or 7/3.

Explanation

Neighing گھوڑے کی آواز

Mewing بلی کی آواز

Cawing کوے کی آواز

Explanation

To put one’s hand to plough is an English idiom.

To put one’s hand to plough means to take a hard or difficult task

To put one’s hand to plough means مشکل کام کی ذمہ داری لینا

***

Explanation

The value of x 10^C1 x 6^C3 is 11760.

Explanation

• Nylon is a synthetic polymer that belongs to the class of polyamides.
• It is made up of repeating units of amide groups (-CONH-) linked together by peptide bonds.
• Nylon is a thermoplastic material that is strong, flexible, and resistant to abrasion and chemicals.

Explanation

• About 75% of elements in the periodic table are metals.
• The periodic table is divided into metals, nonmetals, and metalloids. 
• The classification of elements as metals, nonmetals, or metalloids is based on their physical and chemical properties.

Explanation

• A buffer solution is a mixture of a weak acid and its conjugate base, or a weak base and its conjugate acid, that resists changes in pH when an acid or base is added to it.
• This is because the acid and its conjugate base (or the base and its conjugate acid) react with the added acid or base to maintain the equilibrium, keeping the pH constant.

Explanation

The pH of a buffer solution depends on the concentration of both the acid (H+) and its conjugate base (-OH-). A buffer solution is a mixture of a weak acid and its conjugate base, or a weak base and its conjugate acid. The pH of the solution is determined by the ratio of the concentrations of the acid and its conjugate base, as described by the Henderson-Hasselbalch equation: pH = pKa + log([base]/[acid])

Where:

• pH is the negative logarithm of the hydrogen ion concentration
• pKa is the acid dissociation constant
• [base] is the concentration of the conjugate base
• [acid] is the concentration of the acid

Therefore, the pH of a buffer solution depends on the concentration of both the acid (H+) and its conjugate base (-OH-).

Explanation

• Lone pairs are pairs of outer shell electrons that are not used in bonding. They are also known as non-bonding pairs or unshared pairs.
• These electrons are typically found in the outermost energy level (valence shell) of an atom and are not involved in forming chemical bonds with other atoms.