Explanation

The iodoform test is a chemical reaction used to identify the presence of a methyl ketone group (CH3-CO-) in a compound.

When a methyl ketone reacts with iodine and sodium hydroxide, it produces a yellow precipitate of iodoform.

This makes the iodoform test a reliable way to detect methyl ketones.

Explanation

The aromatization of n-heptane primarily yields toluene.

This process involves the dehydrogenation and cyclization of n-heptane, facilitated by catalysts like Cr2O3/Al2O3 at elevated temperatures, forming a benzene ring with a methyl substituent.

Explanation

The dot product of a vector with itself is equal to the square of its magnitude, or |A|².

The dot product of two vectors A and B is defined as: A · B = |A| |B| cos θ, where θ is the angle between the vectors.

When a vector is dotted with itself, the angle θ becomes 0 (since the vectors are parallel), and cos 0 = 1.

Therefore, A · A = |A| |A| cos 0 = |A|². 

Explanation

The slower motion of a pendulum is due to a longer period, which is related to the weaker gravitational force at higher altitudes

K2, being a very high mountain, has a significantly lower value of acceleration

Due to gravity, cities like Karachi, Murree, or Lahore result in a slower pendulum motion. 

Explanation

Chloroform, or trichloromethane, is an organic compound with the formula CHCl₃.

It is a colorless, sweet-smelling, dense liquid that is produced on a large scale as a precursor to PTFE.

Explanation

A population refers to all individuals of the same species living in a specific geographic area.

It is different from a community, which includes multiple species.

Explanation

The science of chemical characteristics falls under the heading of analytical chemistry.

Analytical chemistry focuses on the study of the composition and structure of matter, which includes identifying and characterizing its chemical properties.

Explanation

Case means پیش کردہ نقطہ نظر یا استدلال کے لئے

Argument means کسی عنوان پر نظریات یا پوزیشن کا ایک معقول سیٹ

Explanation

In the borax bead test, cobalt ions (Co²+) react with borax to form cobalt metaborate (Co(BO2)2), which produces a distinct blue color. 

Explanation

The most abundant carbohydrate in nature is cellulose

It is a structural polysaccharide that forms the cell walls of plants and is found in vast quantities throughout the plant kingdom.