Explanation

Aluminum oxide is not basic in nature; it is amphoteric, meaning it can act as both an acid and a base.

Unlike the other metal oxides listed, which are basic.

Explanation

The general formula CnH₂nO corresponds to ketones, where a carbonyl group (C=O) is bonded to two alkyl groups.

This formula is consistent with ketones but not with carboxylic acids, ethers, or carbolic acid (phenol).

Carboxylic acids: CnH₂nO₂

Ethers: CnH₂n+₂O

Alcohols: CnH₂n+₂O

Explanation

The range of normal total lung capacity in humans is 5-6 liters.

Total lung capacity includes the maximum amount of air the lungs can hold, encompassing tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume.

Explanation

The statement "Increase in enzyme concentration reduces the rate" is incorrect.

Increasing enzyme concentration generally increases the reaction rate.

It provided substrate availability is not a limiting factor.

Explanation

The formula 𝑉 = 𝑊/ 𝑞0 represents electric potential, where 𝑉 is the potential, 𝑊 is the work done, and 𝑞0 is the test charge.

Explanation

When a radioactive element undergoes decay, the number of atoms decreases by half every half-life. So, after "n" half-lives, the number of atoms left behind is:

No × (1/2)^n

Where:

No = initial number of atoms

n = number of half-lives

This is because the decay process follows a geometric progression with a common ratio of 1/2.

So, after "n" half-lives, the number of atoms left is (1/2)^n times the initial number, which is:

(1/2)^n No

Explanation

The formula Φ = 𝐵⋅ 𝐴 represents magnetic flux.

Here, 𝐵 is the magnetic flux density, and 𝐴 is the area through which the magnetic field lines pass.

It indicating the total magnetic field passing through that area.

Explanation

In the Calvin cycle, CO₂ reacts with RuBP to produce a 6-carbon unstable intermediate.

This intermediate quickly splits into two molecules of 3-PGA (3-phosphoglycerate) as part of the carbon fixation process.

Explanation

The area under a velocity-time graph represents the total distance traveled by an object. This is because:

∫v(t)dt = distance

Where v(t) is the velocity as a function of time.

Explanation

Current (I) is defined as the rate of flow of charge (Q) with respect to time (t). The formula to calculate current is:

I = Q / t

Given:

Q = 90 C (charge)

t = 30 s (time)

I = 90 C / 30 s = 3 A

So, the current in the wire is 3 A.