Incorrect URL accessed!!!!

ANSWER

If 110 gram of copper sulphate is dissolve in 550 gram of solution. Calculate the concentrstion

Posted by Neha Kumari 7 years, 6 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

Difference between simple distillation and fractional distillation

Posted by Rajan Kumar 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

1. Simple distillation is the method used to separate substances in mixtures with significantly different boiling points, while fractional distillation is used for mixtures containing chemicals with boiling points close to each other.

2. Simple distillation will only have one distillation (vaporization-condensation) cycle in the whole process, while the fractional cycle will have at least two cycles.

3. Fractional distillation will use additional equipment called the ‘fractionating column’, while the simple distillation will not need that equipment.

4. Simple distillation is often used to separate the liquid substance from the solid substance. Doing such separation with fractional distillation is not sensible.

ANSWER

What is cgs unit

Posted by Om Dholariya 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

The CGS system of units is one in which the length is measured in centimetre, mass is measured in gram and time is measured in second.

ANSWER

Is hair made up of dead cells

Posted by Rohan Rao 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Anshu Malik 7 years, 6 months ago

Nihal u r right but if they are made up of dead cells so why they grow ???

Nikhil Yadav 7 years, 6 months ago

Yee

ANSWER

Define adipose tissue

Posted by Hritik Raushan 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

Adipose tissue:

It consists of large number of oval and rounded adipose cells (adipocytes) filled with fat globules.
The adipose tissue is abundant below the skin, between the internal organs (e.g., around the kidney) in yellow bone marrow.

ANSWER

What Motion is used for solid particle?

Posted by Saurav Gupta 5 years, 11 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

To show an activity particles of matter have space between them

Posted by Gangadhar Naik 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Anshu Malik 7 years, 6 months ago

By mixing salt in water the particles of get fixed in the space btween the particles of water

Vishal Pal 7 years, 6 months ago

Because of force of attraction particles of solid are closely packed

ANSWER

Write on active to show that particles are continuous moving

Posted by Gangadhar Naik 7 years, 6 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

A rubber band change its shape why

Posted by Gangadhar Naik 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Pridiksha Suresh Reddy 7 years, 6 months ago

It changes it shape when we apply force . when we release force it regains the shape

ANSWER

Solids have defined shape but a packet or sugar when capt in different jar they will have space of the jar why

Posted by Gangadhar Naik 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Kalashree Bhandare 7 years, 6 months ago

The sugar crystals shape and size r definite but they occupy the shape of the jar without changing their shape

ANSWER

Solids and non compressible but sponges compresabel

Posted by Gangadhar Naik 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Kalashree Bhandare 7 years, 6 months ago

Sponge is compressible because it has minute holes in which air is trapped when we apply force on it compresses and the air moves out and when the force is released it regains it's original position

ANSWER

Why solids are rigid

Posted by Gangadhar Naik 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

Solids are rigid because the intermolecular forces of attraction that are present in solids are very strong. The constituent particles of solids cannot move from their positions they can only vibrate from their mean positive.

ANSWER

Which substances are transported by cell?

Posted by Harpreet Singh Kahlon 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Mahtab Rathee 7 years, 6 months ago

Food

ANSWER

Why does desert cooler cool more in hot dry day?

Posted by Hardik Sharna 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Hritik Raushan 7 years, 6 months ago

Desert cooler devise based on evaporation in which water take heat energy from surroundings and evaporates and for gaining the heat loss another water comes and keep surroundings cool

ANSWER

What r aerosols?

Posted by Kalashree Bhandare 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Sakshi Shaw 7 years, 6 months ago

An aerosol is a colloid in which a solid or liquid is dispersed in gas. Ex - fog, mist, hairspray and clouds.

ANSWER

How does evaporaration causes cooling?

Posted by Siddharth Kalal 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Sanskar Agarwal 7 years, 6 months ago

When the wayer is evaporating during evaporation the wind blows and the process of which it changes its state into gaseous its get hit with the air which cools the air.

ANSWER

What is the difference between simple and fractional distillation

Posted by Gurpreet Singh 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Kalashree Bhandare 7 years, 6 months ago

Distillation is the process by which two missicible liquids can be separated. There r two types of distillation simple distillation and fractional distillation in simple distillation the difference between the boiling point of the liquid should be more than 25k and in other hand in fractional distillation the boiling point is less than 25

3Thank You

ANSWER

Why lysosoms are known as sucide bag

Posted by Aditya Sachdeva 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Manjari Singh 7 years, 6 months ago

Lysosomes contain powerful digestive enzymes which are capable of breaking down organic materials during the disturbance in celullar matabolism. when the cell get damaged ,lysosomes may burst ans the enzymes digest their own cell that's why lysosomes are also known as suicide bags of a cell

3Thank You

ANSWER

What type of tissues are more abundant in plants

Posted by Swara Dodal 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Jaykishor Mandal 7 years, 6 months ago

There are two types of tissues 1.plant tissue 2.animal tissue

ANSWER

Speed is a vector quantity or scalar quantity

Posted by Lokanath Pradhan 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Kalashree Bhandare 7 years, 6 months ago

Speed is a scalar quantity as it defines only magnitude but not the direction

Yogita Ingle 7 years, 6 months ago

Speed is a scalar quantity.

ANSWER

A car accelerates uniformly from 18 km per hour to 36 km per hour in 5 sec.calculate the acceleration and the distance covered by the car on that time

Posted by Kanishka Choudhary 7 years, 6 months ago

CBSE > Class 09 > Science

3 answers

Manjari Singh 7 years, 6 months ago

a=3.6m/s2 s=135 m

Lokanath Pradhan 7 years, 6 months ago

a= 1ms-2 d = 37.50metre

Harsh Chauhan 7 years, 6 months ago

432

ANSWER

What is mole? Explain it briefly.

Posted by Yash Yadav 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

Mole is the measurement in chemistry. It is used to express the amount of a chemical substance.
One mole is defined as the amount of substance of a system which contains as many entities like, atoms, molecules and ions as there are atoms in 12 grams of carbon - 12".
Number of particles in 1 mole:
1 mole of hydrogen atoms represents 6.022 × 10²³ hydrogen atoms.
1 mole of hydrogen molecules represents 6.022 × 10²³ hydrogen molecules.
1 mole of water molecules represents 6.022 × 10²³ water molecules.

ANSWER

what is cell discoverd?

Posted by Mayuri Madheshia 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Sandeep Kumar 7 years, 6 months ago

Robert hooke in 1665

Devank Dubey 7 years, 6 months ago

Dead cell

ANSWER

Why cell is called the structural and functional unit of life

Posted by Priyanshi Nakoti 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Kalashree Bhandare 7 years, 6 months ago

As the cell is basic unit of life which supports the whole system so therefore it is known as the structural and functional unit of life

Devank Dubey 7 years, 6 months ago

Because it provides structure,definite shape and many functions to body

ANSWER

0.5gm of salt is dissloved in 25gm of water calculate the/ amount of salt solution

Posted by Prashant Tandon 7 years, 6 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

Define how many atoms are present in water molecules?

Posted by Karam Singh 7 years, 6 months ago

CBSE > Class 09 > Science

3 answers

Himanshi Upadhyay 7 years, 6 months ago

Only two atom are present . hydrogen and oxygen.

Esha Sahoo 5 years, 11 months ago

Dhgwgg svgsgsy gstydhdvgzggghsshshjwu dvsyyria. Svsgshzh zhshhszvzghsbz vzgzh zhhasb s vzvzvhhs ggsv s. Z gvabsbbm.svv snimshbs.snbsvgdhsiwyyet6ueigjnfgayiqorhvbe ggsgsgvgsggshhshshhgtwguejehege. I have been a while. I have been a while. I have been a while. I have been a while.

Gurudev Nautiyal 7 years, 6 months ago

ANSWER

What is a hypotonic solution

Posted by Avinash Bakhla 7 years, 6 months ago

CBSE > Class 09 > Science

3 answers

Esha Sahoo 7 years, 6 months ago

Hypo hypo hypo hypo hypo hypo

Gurudev Nautiyal 7 years, 6 months ago

In this sollution cell will swell

Gurudev Nautiyal 7 years, 6 months ago

Hindi solutions cell will swell

ANSWER

What is photoperiods?

Posted by Kalashree Bhandare 7 years, 6 months ago

CBSE > Class 09 > Science

4 answers

Esha Sahoo 7 years, 6 months ago

The period when the plant is getting sunlight example it is getting sunlight for eight hours out of 24 hours then it has will become its photo period if you find it interesting please reply me back

Kalashree Bhandare 7 years, 6 months ago

Thanks ishita

Ismita Singh 7 years, 6 months ago

The period when the plant is getting sunlight E.g, if it is getting sunlight for 8 hours out of 24 hours then 8 hours will become it's photoperiod. If u find it interesting plz reply me back!!!

Harman Singh 7 years, 6 months ago

It is duration of daylight that influences plant in growth,flowers,etc.