NSMQ 2026 past questions with answers

Answer

Dominant: $\text{round}$; Recessive: $\text{wrinkled}$

1. 1.Identify the classical Mendel trait: seed shape.
2. 2.Recall Mendel's recorded phenotypes: dominant = round, recessive = wrinkled.

Answer

$\text{Calcium oxide }(\text{CaO})$

1. 1.Limestone is mainly composed of $\mathrm{CaC}{\mathrm{O}}_3$ (calcium carbonate).
2. 2.On strong heating (calcination) $\mathrm{CaC}{\mathrm{O}}_3(\mathrm{s})\to \mathrm{CaO}(\mathrm{s})+\mathrm{C}{\mathrm{O}}_2(\mathrm{g})$ (thermal decomposition).
3. 3.The solid product of this decomposition is $\mathrm{CaO}$.
4. 4.Hence the product formed is Calcium oxide (CaO).

Answer

$n=7$

1. 1.Set $\frac{n-2}{n}\pi =\frac{5\pi }{7}$ → $\frac{n-2}{n}=\frac{5}{7}$.
2. 2.Solve: $7(n-2)=5n\Rightarrow 7n-14=5n\Rightarrow 2n=14\Rightarrow n=7$.

Answer

$V_{{\text{CO}}_2}=8960{\text{dm}}^3=8.96{\text{m}}^3$

1. 1.Mass butane $=5800\text{g}$; moles $=5800/58=100\text{mol}$.
2. 2.Moles CO${}_2$ produced $=4\times 100=400\text{mol}$.
3. 3.Volume $=400\times 22.4=8960{\text{dm}}^3=8.96{\text{m}}^3$.

Answer

$\approx 4.04\times 10^{-12}\text{m}$.

1. 1.Compute $\lambda =6.626\times 10^{-34}/(9.11\times 10^{-31}\times 1.8\times 10^8)$.
2. 2.Evaluate to get $\lambda \approx 4.04\times 10^{-12}\text{m}$.

Answer

Cambium (wound callus formation involves cambial activity)

1. 1.Wound healing in plants occurs by formation of a mass of undifferentiated cells (callus) produced at the injury site by actively dividing meristematic cells.
2. 2.The meristematic tissue responsible for producing new vascular and protective tissues during secondary growth and for generating such callus is the cambium (including vascular and cork cambium).
3. 3.Cambial cells divide repeatedly and differentiate to replace damaged tissues and seal the wound as callus.
4. 4.Hence wounds are primarily healed by the activity of the cambium, since wound callus formation involves cambial activity.

Answer

False

A cubic's derivative is quadratic and can have fewer than two real roots; hence not every cubic has exactly two stationary points.

Answer

False

Being conservative refers to path independence and existence of a potential; a conservative force can vary with position, so it is not generally a constant force. The statement is false.

Answer

Doping

Answer

2468