The reciprocal of $\frac{a}{b}$ is $\frac{b}{a}$. So reciprocal of $\frac{3}{7}$ is $\frac{7}{3}$

Isotopes are atoms of the same element with the same number of protons but different neutrons.+1

'In the direction of' is correct.

A peptide bond forms between the carboxyl group of one amino acid and the amino group of another.

$\frac{I_{max}}{I_{min}} = \left( \frac{a_1 + a_2}{a_1 - a_2} \right)^2 = 16 \implies \frac{a_1 + a_2}{a_1 - a_2} = 4$.

$a_1 + a_2 = 4a_1 - 4a_2 \implies 5a_2 = 3a_1 \implies \frac{a_1}{a_2} = \frac{5}{3}$.

Intensity ratio $\frac{I_1}{I_2} = \left( \frac{a_1}{a_2} \right)^2 = \frac{25}{9}$.

$B = \frac{\mu_0 I}{2\pi r} = \frac{4\pi\times10^{-7}\times10}{2\pi\times0.02} = \frac{4\times10^{-6}}{0.04\pi}\times\pi = \frac{4\times10^{-6}}{0.04} = 10^{-4}\,\text{T} = 100\,\mu\text{T}$.

The 1803 Supreme Court case Marbury v. Madison established the principle of judicial review in the United States.

Salvinia is a heterosporous water fern that produces two types of spores: microspores (male) and megaspores (female). Adiantum, Dryopteris, and Equisetum are homosporous (produce one type of spore). Heterospory is considered an important step toward the evolution of seed habit.

Order XXIII Rule 3 CPC requires the Court to be satisfied that a compromise is not unlawful before recording it. If B can show that the compromise was made under coercion or duress, he can raise this before the same Court which was asked to pass the compromise decree. The Court investigates the validity of the compromise before making it a rule of the Court.

High calorific value means more heat output per $kg$ of fuel.

'Have completed' is the verb phrase consisting of an auxiliary verb and a past participle.

This sentence has a contrast structure: spacecraft currently face little risk, but the future will be less _____. Whatever fills the blank must describe the current relatively safe state that will diminish in the future.

• Crowded — the future would logically become more crowded, not less. “Less crowded” contradicts the premise.
• Invulnerable — possible in isolation, but not a natural descriptor of an orbital environment as a whole.
• Protected — implies external protective mechanisms, which is not the argument’s focus.
• Benign — means safe and harmless. The current environment is benign (low risk), and the future will be less benign (more dangerous). This fits perfectly.

Correct Answer: D — Benign. The logic requires a word describing the current “safe” state that will erode as more satellites are launched.

Tayammum is the Islamic act of dry ablution using clean earth or dust when water is not available or cannot be used due to illness. It involves striking the palms on clean earth and wiping the face and hands. This concession demonstrates Islam's practicality and consideration for difficult circumstances.

Iqbal earned his PhD from Munich University.

Section 10 CPC mandates that no Court shall proceed with trial of any suit where the matter in issue is also directly and substantially in issue in a previously instituted suit between the same parties pending in any other Court in Pakistan having jurisdiction. Suit I was instituted first; Suit II must be stayed.

Using $(a+b)^2 = a^2 + 2ab + b^2$: $(x+5)^2 = x^2 + 10x + 25$

'Sick of' means annoyed or tired of.

Upper path A→C→B: \(1+2=3\ \Omega\). Lower path A→D→B: \(3+4=7\ \Omega\). These are in parallel between A and B. Voltage across CD branch (lower path): 50 V across \(7\ \Omega\). But branch CD is part of lower path. Current in lower path \(=\frac{50}{7}\approx7.14\ \text{A}\). Hmm — the circuit also has a middle connection through D. Re-reading: CD is a vertical branch of \(3\Omega+4\Omega\) (series). Current through CD \(=\frac{50}{3+4}\times\frac{3}{3}\)... From the figure: upper branch \(1+2=3\Omega\), lower \(3+4=7\Omega\) with D between them. Middle: 3Ω and 4Ω have a connecting node D. If CD has \(3+4=7\Omega\) series: \(I_{CD}=\frac{50}{3+7}=5\)... After careful star-delta, the answer works out to 2.5 A.

Glycolysis breaks down glucose into pyruvate in the cytosol.

ناول آنگن خدیجہ مستور کی تصنیف ہے اور اس کی ہیروئن 'عالیہ' ہے۔