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The material kept between the two charged plates on a capacitor is called as a ___

Vinegar is a sour liquid. State whether vinegar will conduct electricity or not.

Friction opposes ___motion between two surfaces.

Which of the following compounds is manufactured by using the chemical effect of electric current ?
(a) ammonium hydroxide
(b) sodium carbonate
(c) magnesium hydroxide
(d) sodium hydroxide

Name the type of forces involved in the following :

(a) A horse pulling a cart.

(b) A sticker attached to steel almirah without glue.

(c) A coin falling to the ground on slipping from hand.

(d) A plastic comb rubbed in dry hair picking up tiny pieces of paper.

(e) A moving boat coming to rest when rowing is stopped.

A palstic comb is rubbed with dry hair whereas a glass rod is rubbed with a piece of silk cloth. Which of these will get negatively charged?

A. Plastic comb B. Glass rod C. Dry hair D. Silk cloth

(a) A and B (b) B and C (c) A and D (d) B and D

___force exists between two persons standing next to each other.

Which of the following effects is not produced by the chemical reactions brought about by an electric current ?
(a) bubbles of gases on electrodes
(b) deposits of metals on electrodes
(c) change in colour of solution
(d) formation of a precipitate

Answer the following :

A. If you are on a sandy beach then in which case will you make a deeper impression on the sand

a) while you are standing straight; or

b) while you are lying down

B. If you are on a sandy beach then in which case will you make a deeper impression on the sand

a) while you are standing straight; or

b) while you are walking [5 MARKS]

When current is passed through Copper Sulphate solution, Copper sulphate dissociates into copper and sulphate.This free copper deposits on one of the electrodes.What about the loss of copper in the solution?

36 km/h =

A dam has broader walls at the bottom than at the top. Give a reason.

James combs his hair and brings the comb near some tiny pieces of paper. He finds that the comb is attracting the pieces of paper. The force of attraction on the tiny piece of paper by the comb is due to which one of the following forces?

Two positively charged balls are suspended freely as shown below. Which of the following depicts the behaviour of the balls?

Fill a glass bottle with some water. Blow across the mouth of bottle and listen to the sound. Change the level of the water in the bottle. Does the pitch of the sound change?

Please explain the relation between the amount of water in the glass and the pitch of the sound produced on blowing over the glass with diagram and a short video also. Thank you.

What are the effects of force?

What are magnetic force?

What is vector

Increased smoothness increases friction

How are force and pressure related to each other give five points?

Which of the following factors can bring about a change in the elastic properties of a material?

Consider the following statements:
I. Lightning occurs between the Earth and the clouds
II. Lightning occurs between the same clouds
III. Lightning occurs due to the discharge between charged clouds and the Earth
Among the given statements,

Can sound travel in high frequency in water or is it just low frequency?

What among the following is not present on Moon?

While making tea or something on a gas stove in a metal beaker . Why don't the metal beaker don't expand because of heat?

Gym and tennis shoes have rubber soles rather than leather because

What type of lens (convex or concave) is present in the human eye ?

A balloon inflated with air is heavier than an uninflated balloon. Which of the following statements does not apply to matter in gaseous state?

The internal energy of a system is

You should take a reading with a laboratory thermometer when

Cube root of (-2)3 x (-3)3 is:

Question 01 (e)
Fill in the blank:
Sliding friction is ________than the static friction.

If plus sign (+) denotes the positive electrode and minus sign (-) denotes the negative electrode, then which of the following statement is correct for an iron spoon to be copper-plated ?
(a) Iron spoon (+), copper plate (-), Iron sulphate electrolyte
(b) Iron spoon (-), copper plate (+), Iron sulphate electrolyte
(c) Copper plate (-), Iron spoon (+), Copper sulphate electrolyte
(d) Copper plate (+), Iron spoon (-), Copper sulphate electrolyte

Arrange the following in the order of decreasing temperature:

A coin is thrown in a vertically upward direction with a velocity of $5m/s$. If the acceleration of the coin during its motion is $10m/s^2$ in the downward direction, what will be the height attained by the coin and how much time will it take to reach there?

What is the push or pull on an object known as ?

In Fahrenheit scale, ___.

Simplify : (2x ✖ 3x^-6) ➗ 6x⁴

What are surface waves ?

Good evening sir

I would like to know if 0 is a rational number or not.

Thanks you

Khushi.

What is the relation between the direction of the force of friction and direction of motion?

What are the disadvantages of using a mercury barometer? How does an aneroid barometer take care of this?

Loudness is measured in which unit?

What are the factors on which lateral displacement through glass slab depends?

In electrolysis of water, why is the volume of gas collected over one electrode double than that of gas collected over the other electrode? [1 MARK]

Why are convex mirrors used as rear-view mirrors in vehicles?

The wavelength of waves produced by a source is $50cm$. If wave velocity is $25m{s}^{-1}$, what is the time required for one wave to generate?

Which of the following statement is correct about the lunar eclipse?

When a book placed on a desk is pushed onto the right, in which direction will the force of friction act?