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### Tonoplast is the membrane surrounding the

Tonoplast is the membrane surrounding the

Options

(a) cytoplasm (b) vacuole (c) nucleus (d) mitochondria

vacuole

Explanation:

No explanation available. Be the first to write the explanation for this question by […]

### A black body at 227⁰C radiates heat at the rate of 7cals/cm²s. At a temperature

A black body at 227⁰C radiates heat at the rate of 7cals/cm²s. At a temperature of 727⁰C, the rate of heat radiated in the same units will be:

Options

(a) 50 (b) 112 (c) […]

### The two ends of a rod of length L and a uniform cross-sectional area

The two ends of a rod of length L and a uniform cross-sectional area A are kept at two temperatures T₁ and T₂ (T₁ > T₂). The rate of heat transfer, dQ/dt through the rod […]

### A block of mass M is attached to the lower end of a vertical spring

A block of mass M is attached to the lower end of a vertical spring. The spring is hung from a ceiling and has force constant value k. The mass is released from rest with […]

### Which one of the following equations of motion represents simple harmonic motion?

Which one of the following equations of motion represents simple harmonic motion?

Options

(a) Acceleration = -k(x + a) (b) Acceleration = k(x + a) (c) Acceleration = kx (d) Acceleration = -k₀x+ […]

### A simple pendulum performs simple harmonic motion about x = 0 with an amplitude

A simple pendulum performs simple harmonic motion about x = 0 with an amplitude a and time period T. The speed of the pendulum at x = a/2 will be:

Options

(a) πa […]

### Oxidation numbers of P in PO₄³⁻, of S in SO₄²⁻ and that of Cr in Cr₂O₇²⁻

Oxidation numbers of P in PO₄³⁻, of S in SO₄²⁻ and that of Cr in Cr₂O₇²⁻ are respectively

Options

(a) 3,6 and 5 (b) 5,3 and 6 (c) -3, 6 and 6 (d) […]

### The electric field part of an electromagnetic wave in a medium is represented by

The electric field part of an electromagnetic wave in a medium is represented by Ex = 0 Ey = 2.5 (N / C) cos [(2π x 10⁶ rad/m) t – (π x 10⁻² rad/s) x […]

### Two bodies of mass 1 kg and 3 kg have positive vectors i + 2j + k and -3i -2j + k

Two bodies of mass 1 kg and 3 kg have positive vectors i + 2j + k and -3i -2j + k respectively. The centre of mass of this system has a position vector:

### Four indentical thin rods each of mass M and length l, form a square frame

Four indentical thin rods each of mass M and length l, form a square frame. Momentum of inertia of this frame about an axis through the centre of the square and perpendicular to its plane […]

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