Explanation

• The reaction rate depends on concentrations of A and B.
• Doubling [A] makes rate 4 times → order of A = 2.
• Doubling [B] makes rate double → order of B = 1.
• So total order = 2 + 1 = 3 (Third order reaction).

Last verified on 19-05-2026

Explanation

• PCC Full Form: Pyridinium Chlorochromate
• Type: Mild oxidizing agent
• Primary Alcohol → Aldehyde
• Secondary Alcohol → Ketone
• Usually used in organic solvents like dichloromethane (CH₂Cl₂).

Last verified on 19-05-2026

Explanation

• [Pt(NH₃)₂Cl₂] is a square planar coordination compound of platinum.
• It shows geometrical isomerism because the ligands can occupy different positions around the central metal atom.

The compound forms:

1. Cis-isomer
2. Trans-isomer

So, total geometrical isomers = 2.

Last verified on 19-05-2026

Explanation

• Electrical conductivity means how easily a material allows electric current to pass through it.
• Among common metals, silver has the highest electrical conductivity.

Additional information:

• Silver: 100 (highest)
• Copper: 97 (very close second)
• Gold: 76
• Aluminum: 60
• Iron: ~17 (low compared to above metals)

Last verified on 17-05-2026

Explanation

• Metals allow electricity to pass through them easily.
• Among all metals, silver has the highest electrical conductivity.
• Copper and gold are also very good conductors.
• Silver is widely used in high-precision electrical applications.
• Copper is commonly used in wiring due to cost-effectiveness.

Last verified on 16-05-2026

Explanation

• Planet: Uranus
• Type: Ice Giant
• Temperature: Around −224°C (coldest recorded)
• Position from Sun: 7th planet
• Composition: Hydrogen, helium, methane
• Discovered: William Herschel in 1781

Last verified on 16-05-2026

Explanation

• Planet: Venus
• Rotation direction: Clockwise (retrograde)
• Rotation period: ~243 Earth days
• Revolution period: ~225 Earth days
• Unique fact: Day is longer than its year
• It is the brightest planet.

Last verified on 16-05-2026

Explanation

• The famous Muslim scholar Ibn Rushd (Averroes) is associated with early recorded observation of sunspots.
• He reportedly described dark spots on the Sun using naked-eye observations.
• He initially thought them to be planetary transits like Mercury or Venus.

Last verified on 16-05-2026

Explanation

• Classical theory failed to explain radiation from heated objects.
• Planck proposed that energy is emitted in discrete packets (quanta).
• This successfully explained blackbody radiation behavior.

Last verified on 14-05-2026

Explanation

• According to Planck’s theory: E = hf
• Energy (E) is directly proportional to frequency (f).
• Higher frequency light gives more energy to electrons.
• This can eject electrons with higher kinetic energy (photoelectric effect).

Last verified on 14-05-2026