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The correct statements are : A. Activation energy for enzyme catalysed hydrolysis of sucrose is lower than that of acid catalysed hydrolysis. B. During denaturation, secondary and tertiary structures of a protein are destroyed but primary structure remains intact. C. Nucleotides are joined together by glycosidic linkage between C₁ and C₄ carbons of the pentose sugar. D. Quaternary structure of proteins represents overall folding of the polypeptide chain. Choose the correct answer from the options given below :

The correct statements are : Activation energy, protein structure and nucleotide linkage Q. The correct statements are : A. Activation […]

On heating a mixture of common salt and K₂Cr₂O₇ in equal amount along with concentrated H₂SO₄ in a test tube, a gas is evolved. Formula of the gas evolved and oxidation state of the central metal atom in the gas respectively are:

On heating a mixture of common salt and K₂Cr₂O₇ in equal amount along with concentrated H₂SO₄ in a test tube,

Match List – I with List – II. List – I Reagents A. H₂, Pd–BaSO₄ B. SnCl₂, HCl C. CrO₂Cl₂, CS₂ D. CO, HCl, Anhyd. AlCl₃ List – II Reaction Name (Involving aldehydes) I. Etard Reaction II. Rosenmund Reduction III. Gattermann–Koch Reaction IV. Stephen Reaction Choose the correct answer from the options given below :

Match List – I with List – II. Reagents and Reaction Name (Involving aldehydes) Q. Match List – I with

In a Young’s double slit experiment set up, the two slits are kept 0.4 mm apart and screen is placed at 1 m from slits. If a thin transparent sheet of thickness 20 μm is introduced in front of one of the slits then center bright fringe shifts by 20 mm on the screen. The refractive index of transparent sheet is given by α/10, where α is ____.

In a Young’s double slit experiment set up, the two slits are kept 0.4 mm apart and screen is placed

A diatomic gas (γ = 1.4) does 100 J of work when it is expanded isobarically. Then the heat given to the gas ____ J.

A diatomic gas (γ = 1.4) does 100 J of work when it is expanded isobarically. Then the heat given

The terminal velocity of a metallic ball of radius 6 mm in a viscous fluid is 20 cm/s. The terminal velocity of another ball of same material and having radius 3 mm in the same fluid will be ____ cm/s.

The terminal velocity of a metallic ball of radius 6 mm in a viscous fluid is 20 cm/s. The terminal

An electromagnetic wave of frequency 100 MHz propagates through a medium of conductivity σ = 10 mho/m. The ratio of maximum conduction current density to maximum displacement current density is ____. [ Take 1/(4πϵ₀) = 9 × 10⁹ N m²/C² ]

An electromagnetic wave of frequency 100 MHz propagates through a medium of conductivity σ = 10 mho/m. The ratio of

A particle having electric charge 3 × 10⁻¹⁹ C and mass 6 × 10⁻²⁷ kg is accelerated by applying an electric potential of 1.21 V. Wavelength of the matter wave associated with the particle is α × 10⁻¹² m. The value of α is ____. (Take Planck’s constant = 6.6 × 10⁻³⁴ J·s)

A particle having electric charge 3 × 10⁻¹⁹ C and mass 6 × 10⁻²⁷ kg is accelerated by applying an

A river of width 200 m is flowing from west to east with a speed of 18 km/h. A boat, moving with speed of 36 km/h in still water, is made to travel one-round trip (bank to bank of the river). Minimum time taken by the boat for this journey and also the displacement along the river bank are _ and _ respectively.

A river of width 200 m is flowing from west to east with a speed of 18 km/h. A boat,

A capacitor C is first charged fully with potential difference of V₀ and disconnected from the battery. The charged capacitor is connected across an inductor having inductance L. In t s, 25% of the initial energy in the capacitor is transferred to the inductor. The value of t is ______ s.

A capacitor C is first charged fully with potential difference of V₀ and disconnected from the battery. The charged capacitor

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