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When A Plastic Rod Rubbed With Wool Is Brought Near The Knob Of A Negatively Charged Gold Leaf Electroscope, The Gold Leaves______.(A) Dilate.(B) Contract. (C) Start Oscillating. (D) Collapse Completely.

The correct answer is (D) Collapse Completely. When a plastic rod is rubbed on wool it will acquire a negative charge. As it is brought near the... View Article

What Happens When A Current Carrying Conductor Is Placed In A Magnetic Field?

When a current-carrying conductor is placed in a magnetic field, a mechanical force is exerted on the conductor which can make the conductor... View Article

Which Of The Following Is/Are Not The Branch Of Accounting? (A) Human Resources Accounting. (B) Financial Accounting. (C) Cost Accounting. (D) None Of These.

The correct answer is (A) Human Resources Accounting. Explore more such questions and answers at BYJU’S.... View Article

Molecules of benzoic acid C₆H₅COOH dimerises in benzene.‘W’ g of the acid dissolved in 30g of benzene shows a depression in freezing point equal to 2K. If the percentage association of the acid to form a dimer in solution is 80, then w is: (Given that Kf =5K kg/mol Molar mass of benzoic acid=122 g/mol)

As given in the question: (i = 1 - 0.8 + 0.4 = 0.6) Explore more such questions and answers at BYJU’S.... View Article

Water flows out through a circular pipe whose internal diameter is 2cm at the rate of 6 metre per second into a cylindrical tank the radius of whose base is 60 cm. How much will the level of water rise in 30 minutes?

Internal diameter of the pipe = 2cm Radius = Water that flows out through the pipe in The volume of water that flows out through the pipe... View Article

An Alpha Particle Is Kept In An Electric Field Of 15×104Nc−1. Calculate The Force Acting On The Particle. An Electron Is Separated From A Proton Through A Distance Of 0.53A. Calculate Electric Field At The Location Of Electrons.

Given: α particles have 2 e charge Therefore, the force acting on it is - Distance between electron and proton, r is 0.53 A. As we know:... View Article

Which One Of The Following Types Of Waves Are Used In A Night Vision Apparatus? (A) Microwaves. (B) Radio Waves. (C) Infra-red Waves. (D) None Of The Above.

The correct answer is (C) Infra-red Waves. Explore more such questions and answers at BYJU’S.... View Article

The Salary And Perquisites Of The President Of India Are Determined By The(A) Supreme Court. (B) Prime Minister.(C) Central Cabinet. (D) Union Parliament

The correct answer is (D) Union Parliament Explore more such questions and answers at BYJU’S.... View Article

Define Element Compound And Mixture With Examples.

Elements are the constitute simplest chemical substances called atoms, which possess similar properties. For example aluminium, copper, iron,... View Article

List Out Any Five Factors Affecting Price Elasticity Of Demand.

The five factors that affect price elasticity of demand are: Luxury Time period Availability of substitutes Necessity and demand of a... View Article

Write Any Four Integers Between (-4) And 4.

Integers between -4 and 4 are: -3, -2, -1, 0, 1, 2, 3. Explore more such questions and answers at BYJU’S.... View Article

Fibre Optic Transmission Is Based On The Phenomenon Of__________. (A) Interference.(B) Polarization.(C) Photoelectric Effect.(D) Total Internal Reflection

The correct answer is (D) Total internal reflection Fibre optic transmission is based on the phenomenon of total internal reflection. Explore... View Article

Sulphur Is Soluble In ____ (A) Water. (B) Ether. (C) Alcohol (D) Carbon Disulphide

Answer: (D) Carbon Disulphide. In the periodic table, sulfur(S) is found in group 16. It is non-metal and is obtained as a byproduct after... View Article

A And B Can Do A Piece Of Work In 12 Days, B And C In 15 Days While A And C Can Do It In 20 Days. At What Time C Alone Can Complete The Work?

Sol: Given: A and B can do a piece of work in 12 Days = B and C can do a piece of work in 15 Days = A and C can do a piece of work in 20... View Article

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