Who coined the term ``Root Pressure Theory''?

• (A) Julius von Sachs
• (B) Stephen Hales
• (C) J. Priestley
• (D) Charles Darwin

A particle performs linear S.H.M. with potential energy \(U = 0.1\pi^2 x^2\). If the mass is \(20\,g\), what is its frequency?

• (A) \(1.581\,Hz\)
• (B) \(3.162\,Hz\)
• (C) \(0.790\,Hz\)
• (D) \(6.283\,Hz\)

Which reagent is used in the Stephen reaction to reduce nitriles to imines?

• (A) \(LiAlH_4\)
• (B) \(SnCl_2/HCl\)
• (C) \(NaBH_4\)
• (D) \(Zn/HCl\)

Where is angiotensinogen secreted from in the human body?

• (A) Kidney
• (B) Pancreas
• (C) Liver
• (D) Spleen

What are the monomers used to synthesize Bakelite?

• (A) Ethene and Styrene
• (B) Phenol and Formaldehyde
• (C) Urea and Formaldehyde
• (D) Ethylene glycol and Terephthalic acid

If a star \(A\) has radiant power three times that of the Sun and a temperature of \(6000\,K\) while the Sun has temperature \(2000\,K\), what is the ratio of their radii \((R_A : R_{Sun})\)?

• (A) \(1:\sqrt{27}\)
• (B) \(\sqrt{27}:1\)
• (C) \(1:9\)
• (D) \(9:1\)

What is the site of perception for photoperiodism induction in plants?

• (A) Roots
• (B) Leaves
• (C) Stem apex
• (D) Flowers

Which molecule has a net dipole moment of zero among \(NH_3\), \(H_2O\), \(NF_3\), and \(CCl_4\)?

• (A) \(NH_3\)
• (B) \(H_2O\)
• (C) \(NF_3\)
• (D) \(CCl_4\)

What is the frequency of a wave with a speed of \(30\,m/s\) if the distance between 11 consecutive crests is \(1\,m\)?

• (A) \(30\,Hz\)
• (B) \(300\,Hz\)
• (C) \(330\,Hz\)
• (D) \(3\,Hz\)

What are the irregular muscular ridges on the inner surface of the heart's ventricles called?

• (A) Trabeculae septomarginalis
• (B) Papillary muscles
• (C) Columnae carneae
• (D) Chordae tendineae

What is the name of the hydrocarbon that yields ethanal and propanone upon reductive ozonolysis?

• (A) But-2-ene
• (B) 2-Methylbut-2-ene
• (C) 2-Methylbut-1-ene
• (D) Pent-2-ene

Which codon is known for its dual function as both an initiator codon and the codon for Methionine?

• (A) UAA
• (B) AUG
• (C) UAG
• (D) UGA

What is the shunt resistance \(S\) needed if the galvanometer current \(I_g\) is \(8%\) of the total current \(I\)?

• (A) \(\frac{2G}{23}\)
• (B) \(\frac{8G}{23}\)
• (C) \(\frac{23G}{2}\)
• (D) \(\frac{G}{23}\)

Who is credited with the discovery of DNA?

• (A) James Watson
• (B) Francis Crick
• (C) F. Miescher
• (D) Rosalind Franklin