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In photorespiration, glycolate is converted into serine and carbon dioxide in:
1. Mitochondria
2. Cholorplasts
3. Vacuoles
4. Peroxisomes

At which step, glycolysis reaches the break-even point: 2
molecules of ATP consumed, and 2 new molecules synthesized?

Many of the pancreatic enzymes must be activated by trypsin before they can begin digesting food, but trypsin itself requires the activating effect of
(1) chymotrypsin
(2) carboxypeptidase
(3) phospholipase
(4) enterokinase

Hemoglobin that is bonded to carbon monoxide and therefore cannot transport oxygen, is called
1. carboxyhemoglobin
2. methemoglobin
3. reduced hemoglobin
4. carbaminohemoglobin

Which of the following is a correct statement?
1. The volume of blood in pulmonary circulation is more than the volume of blood in systemic circulation at any instant.
2. The blood pressure in pulmonary circulation is less than that of the systemic circulation
3. Double circulation is characteristic of all vertebrates
4. A double aortic arch is seen in birds and mammals.

The normal value of GFR is approximately:
1. 650 ml/min
2. 180 ml/min
3. 180 ml/day
4. 125 ml/min

The human skull has 22 bones with ..................cranial bones and ............................ facial bones
1. 10,12                           
2. 14,8
3. 12,10                           
4. 8,14

In the resting state of neurons, diffusion due to concentration gradients, if allowed, would drive:
1. K⁺ into the cell
2. K⁺ and Na⁺ out of the cell
3. Na⁺ out of the cell
4. Na⁺ into the cell

Which of the following are not steroid hormones but still do not act through second messenger system, are small, nonpolar and can be taken orally?
1. prostaglandins
2. estrogen and progesterone
3. insulin and glucagon
4. thyroid hormones (T3 and T4)

Which of the following is not an action of ethylene?

For the given reaction, the degree of dissociation of B was found to be 20% at 300 K and 24% at 500K.
\(2 \mathrm{~A}(\mathrm{~s})+\mathrm{B}(\mathrm{g}) \rightleftharpoons \mathrm{C}(\mathrm{g})+2 \mathrm{D}(\mathrm{s})+\mathrm{E}(\mathrm{s})\)
The rate of backward reaction:

What is the correct increasing order of bond angles for the following species: \(\mathrm{NH}_2^{-},\mathrm{NH}_3~ \text{and} ~\mathrm{NH}_4^{+}\)?
1. ${\mathrm{NH}}_2^{-}>{\mathrm{NH}}_3 >{\mathrm{NH}}_4^{+}$
2. ${\mathrm{NH}}_4^{+}>{\mathrm{NH}}_3 >{\mathrm{NH}}_2^{-}$
3. ${\mathrm{NH}}_3^{}>{\mathrm{NH}}_{{}_2}^{-} >{\mathrm{NH}}_4^{+}$
4. ${\mathrm{NH}}_3^{}>{\mathrm{NH}}_4^{+} >{\mathrm{NH}}_2^{-}$

The relative stability order of carbanions CH≡C-, CH₃ - and CH₂=CH^- is ____________
1. $\mathrm{CH}\equiv {\mathrm{C}}^{-}>{\mathrm{CH}}_2={\mathrm{CH}}^{-}>{\mathrm{CH}}_3^{-}$
2. ${\mathrm{CH}}_3^{-}>{\mathrm{CH}}_2={\mathrm{CH}}^{-}>\mathrm{CH}\equiv {\mathrm{C}}^{-}$
3. $\mathrm{CH}\equiv {\mathrm{C}}^{-}<{\mathrm{CH}}_2={\mathrm{CH}}^{-}>{\mathrm{CH}}_3^{-}$
4. ${\mathrm{CH}}_2={\mathrm{CH}}^{-}<\mathrm{CH}\equiv {\mathrm{C}}^{-}<{\mathrm{CH}}_3^{-}$

Which of the following has square planar structure?
1. [NiCl₄]^2-
2. [Ni(CO)₄]
3. [Ni(CN)₄]^2-
4. None of these

Ethyl acetate on reaction with excess of methyl magnesium chloride and dil. H₂SO₄ gives
1. dimethyl ketone
2. iso propyl alcohol
3. ethyl aceto acetate
4. t-butyl alcohol

The radius of a soap bubble is increased from R to 2 R. Work done in this process (T = surface tension) is: 

$80 \mathrm{g} \mathrm{of} \mathrm{water} \mathrm{at} 30°\mathrm{C} \mathrm{is} \mathrm{poured} \mathrm{on} \mathrm{a} \mathrm{large} block$
$\mathrm{of} \mathrm{ice} \mathrm{at} 0°\mathrm{C}. \mathrm{The} \mathrm{mass} \mathrm{of} \mathrm{ice} \mathrm{that} \mathrm{melts} \mathrm{is}$
1.  15 g
2.  30 g
3.  50 g
4  60 g

The root mean square speed of oxygen molecules (O2) at a certain absolute temperature is v. If the temperature is doubled and oxygen gas dissociates into oxygen atom, the rms speed would be :
1.  $\mathrm{v}$
2.  $\sqrt{2}\mathrm{v}$
3.  $2\mathrm{v}$
4.  $2\sqrt{2}\mathrm{v}$

A system is taken from state \(A\) to state \(B\) along two different paths \(1\) and \(2.\) If the heat absorbed and work done by the system along these two paths are \(Q_1,Q_2\) and \(W_1,W_2\) respectively, then
1. \(Q_1=Q_2\)
2. \(W_1=W_2\)
3. \(Q_1-W_1=Q_2-W_2\)
4. \(Q_1+W_1=Q_2+W_2\)

A gas undergoes a process in which its pressure P and volume V are related as ${\mathrm{VP}}^{\mathrm{n}}=\mathrm{constant}$. The bulk modulus for the gas in the process is:
[This question includes concepts from Kinetic Theory chapter]
1. $\frac{P}{n}$
2. $P^{1/n}$
3. nP
4. $P^n$