Explanation

Electric generators and transformers are based on the principles of Faraday's law.

This law explains electromagnetic induction, where a changing magnetic field induces an electric current.

Explanation

The blue color of Fehling's solution changes to red when warmed with an aldehyde due to the reduction of copper(II) ions to Cu₂O (copper(I) oxide), which forms a red precipitate.

This indicates the presence of an aldehyde.

Explanation

Homocyclic compounds consist of rings made entirely of carbon atoms.

They are classified as alicyclic (non-aromatic) or aromatic based on the ring structure's bonding and stability.

Explanation

The correct statement regarding flagella is that they originate from basal bodies.

Flagella are motile structures anchored in the cell by basal bodies, which help in cell movement.

Explanation

He said to his disciples, "Watch and pray."

This sentence is punctuated correctly because it uses quotation marks to set off the direct quotation ("Watch and pray") and a comma to separate the verb ("said") from the quotation.

The comma before the quotation indicates that the quotation is a direct object of the verb "said".

Explanation

It was awfully good of you to propose a day's picnic at Murree.

This sentence is grammatically correct with proper word choice, punctuation, and sentence structure.

Explanation

The de-Broglie wavelength (λ) is given by the formula:

λ = h / (m × v)

Where:

h = Planck's constant = 6.626 × 10^-34 J s

m = mass of the particle = 10^-30 kg

v = velocity of the particle = 10^6 m/s

Substituting the values, we get:

λ = (6.626 × 10^-34 J s) / (10^-30 kg × 10^6 m/s)

= (6.626 × 10^-34 J s) / (10^-24 kg m/s)

= 6.626 × 10^-10 m

So, the de-Broglie wavelength associated with the particle is 6.6×10^-10m.

Explanation

The electronic configuration of chromium (Proton number 24) is [Ar] 3d⁵ 4s¹.

Chromium exhibits an exception to the standard filling order to achieve a more stable half-filled d-subshell.

Explanation

The atomic mass of an element depends on the number of isotopes and their relative abundances in nature.

It is a weighted average of the masses of all isotopes present.

Explanation

The hydrophilic end of a phospholipid molecule is polar because of the presence of a phosphate group.

The phosphate group contributes to the molecule's polarity.

It allowing it to interact with water, in contrast to the hydrophobic fatty acid tails.