Explanation

• Solids like sand remain suspended in water because they are denser than water.
• But not dense enough to sink to the bottom immediately.
• This creates a heterogeneous mixture, where the sand particles remain suspended in the water.

Explanation

Paramagnetism is due to the presence of one or more unpaired electrons which are attracted by the magnetic field

Due to their spin, unpaired electrons have a magnetic dipole moment and act like tiny magnets.

Explanation

A ductile material can undergo significant plastic deformation, meaning it can be stretched or bent without breaking, before fracturing.

This property is known as ductility, and it allows for large strains to occur before the material reaches its breaking point.

Common examples of ductile materials include metals such as copper, aluminum, and steel, as well as certain polymers. 

Explanation

In t-butyl alcohol, the tertiary carbon is bonded to no hydrogen atoms. 

A tertiary carbon is bonded to three other carbon atoms.

In t-butyl alcohol, the carbon with the OH group (the tertiary carbon

It is surrounded by three methyl groups, leaving no space for any hydrogen atoms to be attached directly to it. 

Explanation

The compound that is not a dehydrating agent is CaCl2 (hydrated calcium chloride). 

While anhydrous CaCl2 (calcium chloride) is a dehydrating agent, hydrated CaCl2 (calcium chloride with water molecules attached) does not have the same ability to absorb water. 

Explanation

Ketones are formed by the oxidation of secondary alcohols, where the –OH group is bonded to a carbon attached to two other carbons.

Unlike primary alcohols (which give aldehydes), secondary alcohols yield ketones without further oxidation.

Explanation

Propranolol is a non-selective beta-blocker that blocks both beta-1 and beta-2 receptors.

Therapeutic uses:

Used to treat conditions like hypertension, angina pectoris, arrhythmias, migraines, and hyperthyroidism. 

Side effects:

Due to its non-selective nature, potential side effects can include bronchospasm in individuals with asthma, fatigue, and cold extremities. 

Explanation

A) Methane (CH₄) - Molecular weight = 16 g/mol
B) Ethane (C₂H₆) - Molecular weight = 30 g/mol
C) Propane (C₃H₈) - Molecular weight = 44 g/mol
D) Butane (C₄H₁₀) - Molecular weight = 58 g/mol

Correct Answer: D) Butane

Butane is the heaviest among the options listed, with a molecular weight of 58 g/mol.

Explanation

The fabrication step where proper interconnection of circuit elements is made is called Metallization.

Metallization is often accomplished with a vacuum deposition technique
***

Explanation

• Bromophenol blue is a pH indicator that changes color in response to changes in acidity or basicity.
• In an acidic medium, it is yellow, and in a basic medium, it turns blue.