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Pyruvate undergoes oxidative decarboxylation to produce _____________.

(a) 2-PGA

(b) α-Ketoglutarate

(c) Succinyl-Co-A

(d) Acetyl-Co-A

Concept: Phases of Respiration: Glycolysis

Give the diagrammatic representation of ETS

Concept: Phases of Respiration: Electron Transport System (Ets) and Oxidative Phosphorylation

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In a standard ECG which one of the following alphabets is the correct representation of the respective of the human heart ______.

Concept: Circulatory Pathways > Electrocardiograph (ECG)

Sketch and label the ‘Ultrastructure of Chloroplast’.

Concept: Site of Photosynthesis

What are the reactions involved for ozone layer depletion in the stratosphere?

Concept: Atmospheric Pollution > Stratospheric Pollution

The reaction, \[\ce{CO(g) + 3H2(g) ↔ CH4(g) + H2O(g)}\] is at equilibrium at 1300 K in a 1L flask. It also contains 0.30 mol of CO, 0.10 mol of H_{2} and 0.02 mol of H_{2}O and an unknown amount of CH_{4} in the flask. Determine the concentration of CH_{4} in the mixture. The equilibrium constant, K_{c} for the reaction at the given temperature is 3.90.

Concept: Law of Chemical Equilibrium and Equilibrium Constant

For the following bond cleavages, use curved arrows to show the electron flow and classify homolysis or heterolysis. Identify reactive intermediate produced as free radical, carbocation and carbanion.

\[\ce{CH3O - OCH3 -> CH3\overset\bullet{\text{O}} + \overset\bullet{\text{O}}CH3}\]

Concept: Fundamental Concepts in Organic Reaction Mechanism > Fission of a Covalent Bond

For the following bond cleavages, use curved-arrows to show the electron flow and classify as homolysis or heterolysis. Identify reactive intermediate produced as free radical, carbocation and carbanion.

Concept: Fundamental Concepts in Organic Reaction Mechanism > Fission of a Covalent Bond

**Draw the resonance structure for the following compound. Show the electron shift using curved-arrow notation.**

\[\ce{CH3CH = CH\overset{+}{C}H2}\]

Concept: Fundamental Concepts in Organic Reaction Mechanism > Resonance Structure

Why do elements in the same group have similar physical and chemical properties?

Concept: Periodic Trends in Chemical Properties > Periodicity of Valence or Oxidation States

Suppose, the electron in a hydrogen atom makes transition from *n* = 3 to *n* = 2 in 10^{−8} s. The order of the torque acting on the electron in this period, using the relation between torque and angular momentum as discussed in the chapter on rotational mechanics is

Concept: Bohrâ€™s Model for Hydrogen Atom

**Find the radian measure corresponding to the following degree measure:**

– 47° 30'

Concept: Concept of Angle

Find the angle in radian through which a pendulum swings if its length is 75 cm and the tip describes an arc of length

10 cm

Concept: Concept of Angle

Find the angle in radian through which a pendulum swings if its length is 75 cm and the tip describes an arc of length

15 cm

Concept: Concept of Angle

Find the angle in radian through which a pendulum swings if its length is 75 cm and the tip describes an arc of length

21 cm

Concept: Concept of Angle

Find the degree measure corresponding to the following radian measure:

\[\frac{9\pi}{5}\]

Concept: Concept of Angle

Find the degree measure corresponding to the following radian measure:

\[- \frac{5\pi}{6}\]

Concept: Concept of Angle

Find the degree measure corresponding to the following radian measure:

\[\left( \frac{18\pi}{5} \right)\]

Concept: Concept of Angle

Find the degree measure corresponding to the following radian measure:

(−3)^{c}

Concept: Concept of Angle

Find the degree measure corresponding to the following radian measure:

11^{c}

Concept: Concept of Angle