Basic Science

Q: \$a\$. To draw water from a well we have to ________ at rope.\$b\$. A charged body _______ an uncharged body towards it.\$c\$. To move a loaded trolley we have to _______ it.\$d\$. The north pole of a magnet _______ the north pole of another magnet.

a.To draw water from a well we have to pull at rope.b.A charged body attracts an uncharged body towards it.c.To move a loaded trolley we have to push it.d.The north pole of a magnet repels the north pole of another magnet.

Q: Why do water pipes, in hilly areas, often burst on a cold frosty night?

Water in the pipe freezes and on freezing water expands, so pipe break.

Q: What is a 'formula' in Chemistry?

Formula is the symbolic expression for a molecule.

Q: Why is a small space left between each set of two rails of a railway line?

As the train moves heat is produced due to friction and due to heat rails expand. If no space is left they will bend.

Q: How are positive and negative charges produced during a thunderstorm?

Clouds are very small droplets of water in the form of vapour. When heavy, dark rain clouds called storm clouds develop high above the ground, strong winds move upwards through the light clouds and move the layer of clouds rub apart each other. As a result extremely large electric charges are produced in the cloud due to friction. The upper layers of clouds get positively charged and the lower layers of cloud get negatively charged.

Q: Why does not moon have an atmosphere?

Moon's thinness is \${10}^{-13}\$ times of the earth, so gases emanating from the surface escape into interplanetary vacuum.

Q: Are the lead pencils made of lead?

No. Powdered graphite is mixed with clay and pressed into sticks.

Q: Why is Miner's Safety Lamp a safe lamp?

The flame is covered by a gauze, so explosion does not occur on contact with inflammable gas.

Q: The process of electric _______ between clouds and the earth or between different clouds causes _______.

The process of electric discharge between clouds and the earth or between different clouds causes lightning.

Q: Why is a person in a moving vehicle thrown forward when the vehicle stops suddenly?

A person in a moving vehicle is in a state of motion. Though the vehicle suddenly stops his body remains in a state of motion, so his body leans forward.

General Knowledge
25296 Views

Easy Qs Med Qs Hard Qs

$a$ . To draw water from a well we have to ____ at rope.
$b$ . A charged body _ an uncharged body towards it.
$c$ . To move a loaded trolley we have to _ it.
$d$ . The north pole of a magnet ___ the north pole of another magnet
.

Attracts, Push, Repels, Pull

Pull, Attracts, Repels, Push,

Pull, Attracts, Push, Repels

Pull, Push, Repels, Attracts

Basic Science

General Knowledge 25296 Views

a. To draw water from a well we have to ________ at rope. b. A charged body _______ an uncharged body towards it. c. To move a loaded trolley we have to _______ it. d. The north pole of a magnet _______ the north pole of another magnet .

Why do water pipes, in hilly areas, often burst on a cold frosty night?

What is a 'formula' in Chemistry?

Why is a small space left between each set of two rails of a railway line?

How are positive and negative charges produced during a thunderstorm?

Why does not moon have an atmosphere?

Are the lead pencils made of lead?

Why is Miner's Safety Lamp a safe lamp?

The process of electric _______ between clouds and the earth or between different clouds causes _______.

Why is a person in a moving vehicle thrown forward when the vehicle stops suddenly?

General Knowledge
25296 Views

$a$ . To draw water from a well we have to ____ at rope.
$b$ . A charged body _ an uncharged body towards it.
$c$ . To move a loaded trolley we have to _ it.
$d$ . The north pole of a magnet ___ the north pole of another magnet
.

The process of electric _ between clouds and the earth or between different clouds causes _.