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Metal- ☆Malleable ☆Ductile ☆Good conductor of heat and electricity ☆e.g. copper, silver, gold etc Non-metal- ☆Non-malleable ☆ Non-Ductile ☆Bad conductor of heat and electricity ☆e.g. Oxygen, hydrogen, nitrogen etc

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Trisha Kumari 3 years, 7 months ago

Metal are lustre but non metal are not lustre

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ANSWER

Explain unit mass

Posted by Purbanhi Mitra 3 years, 7 months ago

CBSE > Class 09 > Science

2 answers

Kartik Kumar 3 years, 7 months ago

Yes this is right answer ??

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Piyush Sharma 3 years, 7 months ago

Unit mass is the simpler name of atomic mass .

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ANSWER

Ch 13 which subject

Posted by Saravagya Singh 3 years, 7 months ago

CBSE > Class 09 > Science

4 answers

Rishi Raj 3 years, 7 months ago

On NCERT Ch- 13 why do we fall ill

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Piyush Sharma 3 years, 7 months ago

Why do we fall ill is of biology

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Moksh Yadav 3 years, 7 months ago

Why do we fall ill??

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Md Shadik Raza 3 years, 7 months ago

Chapter to btao.

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ANSWER

Question paper

Posted by Mousum Nath 3 years, 7 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

What is periodic table

Posted by Puneet Kour 3 years, 7 months ago

CBSE > Class 09 > Science

2 answers

Piyush Sharma 3 years, 7 months ago

The list of elements according to their atomic no. is known as periodic table

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Aakash Pastariya 3 years, 7 months ago

You will study that in 10th class it is the table in which there were the list of elements formulas.

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ANSWER

What is cromoplast

Posted by Mohd Saif 3 years, 7 months ago

CBSE > Class 09 > Science

1 answers

Rashi Mundra 3 years, 7 months ago

a coloured plastid other than a chloroplast, typically containing a yellow or orange pigment.

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ANSWER

If the formula of water is H20 then why can't we combine hydrogen and oxygen and make water

Posted by Varshita Jain 3 years, 7 months ago

CBSE > Class 09 > Science

2 answers

Piyush Sharma 3 years, 7 months ago

We don't have sufficient technology to that socially

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Vijay Raut 3 years, 7 months ago

We need 1 mole of hydrogen and 2 mole of oxygen to form a drop of water So we don't have enough hydrogen and oxygen to make water

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ANSWER

Question Answer

Posted by Baji Munda 3 years, 7 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

Textbook question and answer

Posted by Tenzin Phuntsok 3 years, 7 months ago

CBSE > Class 09 > Science

1 answers

Tenzin Phuntsok 3 years ago

Social

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ANSWER

A simple defination for nucleoid

Posted by Vidhi Verma 3 years, 7 months ago

CBSE > Class 09 > Science

3 answers

Vijay Raut 3 years, 7 months ago

Undeveloped nucleus of prokaryotic cells

1Thank You

Saksham Mittal 3 years, 7 months ago

The nucleoid is the space within a prokaryotic cell where the genetic information, called the genophore, is found. Prokaryotes are divided into bacteria and archaea, which are both unicellular organisms that contain no membrane-bound organelles. The nucleoid, then, also has no membrane around it.

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Deepak Kumar Sahu 3 years, 7 months ago

Poorly defined nuclear region due to absence of nuclear envelope and nucleolus is known as nucleoid

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ANSWER

Name 2 dieses caused by fungi

Posted by Moksh Yadav 3 years, 7 months ago

CBSE > Class 09 > Science

4 answers

Beenu Dalal 3 years, 7 months ago

Aids,polio

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Payal Kumari 3 years, 7 months ago

Aids , polio, chickenpox, rabies, measles.

1Thank You

Chetan Kaushik 12A 3 years, 7 months ago

Skin disease

2Thank You

Vidhi Verma 3 years, 7 months ago

1. Gatii infection 2. Valley fever

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ANSWER

Define disease (1 mark)

Posted by Moksh Yadav 3 years, 7 months ago

CBSE > Class 09 > Science

1 answers

Abhinav Sharma 3 years, 7 months ago

Malfunctioning of human body is known as disease.

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ANSWER

How are living organisms dependent on the soil?

Posted by Moksh Yadav 3 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Preeti Dabral 3 years, 3 months ago

Living organisms are dependent on the soil in the following ways: All the plants (even aquatic), on which almost all the organisms depend directly or indirectly for food, grow in the soil, which provides them with nutrients and water for development.

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ANSWER

Which is heavier Alpha particle or protons

Posted by Naisa Shehrin 3 years, 7 months ago

CBSE > Class 09 > Science

5 answers

Vishal Prajapat 3 years, 7 months ago

Alpha particles are heavier than protons

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Payal Kumari 3 years, 7 months ago

Alpha particals

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Deepak Kumar Sahu 3 years, 7 months ago

Double Positively charged helium nuclei

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Tamanna Rathore 3 years, 7 months ago

Gold foil

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Moksh Yadav 3 years, 7 months ago

Alpha particles

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ANSWER

Define work and types of work

Posted by Mohan Vaddi 3 years, 7 months ago

CBSE > Class 09 > Science

4 answers

Vijay Raut 3 years, 7 months ago

When force and displacement are in the same direction, the work performed on an object is said to be positive work. Example: When a body moves on the horizontal surface, force and displacement act in the forward path. The work is done in this case known as Positive work.

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Yash Karemore 3 years, 7 months ago

there are types of work..

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Yash Karemore 3 years, 7 months ago

When the force is applied on body and that body if gets displaced, then it is said to work. There are 3 types of work - i) +ve work done - this is when the direction of force applied and displacement of body is same. ii) -ve work done - this is when the direction of force applied and displacement on body is opposite. iii) zero work done - this is when the direction of force applied is perpendicular to the displacement of body..

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S_P Tech 3 years, 7 months ago

Work done is force product of displacement W= f × s There is no type but if force is exerted and the displacement is occured then there will be a work done.

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ANSWER

What is cell division? What is it's importance?

Posted by Moksh Yadav 3 years, 7 months ago

CBSE > Class 09 > Science

3 answers

Vishal Prajapat 3 years, 7 months ago

When cell decide into two small cells I mean daughter cells is called cell division it is important because agar cell division nahi hota to hmare body ka growth nahi ho payega

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Ambika Chowdhury 3 years, 7 months ago

What is dotter cell

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Mr.Sumit Kumar 3 years, 7 months ago

When the cell broken into tow dotter cell is know as cell division. Cell division is important because our body is made up of cell. . It recovered dead cell. . Increasemeant in our body.

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ANSWER

name the process through which there is shrinkage or contraction of contents of the cell away from the cell wall

Posted by Moksh Yadav 3 years, 7 months ago

CBSE > Class 09 > Science

3 answers

Nitish Yadav 3 years, 7 months ago

In plants it is known as plasmolysis

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Tamanna Rathore 3 years, 7 months ago

Osmosis

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Sarita Panda 3 years, 7 months ago

Plasmolysis

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ANSWER

Anjali wanted to eat rice and kidney bean (rajmah). She requested her mother to cook the same on next day. At night her mother took a cup of kidney beans and put them in a container having some water and the kept the container covered overnight. Next day it was observed that the kidney beans got swollen and were ready to be cooked. What is this phenomenon due to which kidney beans got swollen is known as? (i) Osmosis (ii) Diffusion (iii) Endosmosis (iv) Exosmosis

Posted by Adnan Khan 3 years, 7 months ago

CBSE > Class 09 > Science

5 answers

Deepak Kumar Sahu 3 years, 7 months ago

Endosmosis

4Thank You

Mr.Sumit Kumar 3 years, 7 months ago

Osmosis

2Thank You

Ankita Yadav 3 years, 7 months ago

Osmosis

2Thank You

Dhirendra Pratap Singh 3 years, 7 months ago

The phenomenon due to which the kidney beans got swollen is known as endosmosis. It should be noted that endosmosis is a special case of osmosis where water enters through membrane.

3Thank You

Sara Ali 3 years, 7 months ago

The phenomenon due to which the kidney beans got swollen is known as osmosis.

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ANSWER

Cell is the structural and functional unit of life. The word cell is derived from the Latin word ‘cellula’ which means “a little room”. Can you name the scientist who coined the term cell? (a) Robert Hooke (b) Anton Von Leeuwenhoek (c) Robert Brown (d) Ernst Haeckel

Posted by Adnan Khan 3 years, 7 months ago

CBSE > Class 09 > Science

5 answers

Shazia Sk 3 years, 7 months ago

Robert Hooke is the scientist who coined the term cell.

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꧁▪ ＲคᎥនТαʀ ࿐ 〖Sէudץ〗 3 years, 7 months ago

Robert hooke

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Manreet Kaur 3 years, 7 months ago

Robert hooke

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Prateek Tamrakar 3 years, 7 months ago

(a) Robert Hooke

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Sara Ali 3 years, 7 months ago

(a) Robert Hooke

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ANSWER

Recoiling of gun is an example of ………….. law of motion. B)When a carpet is beaten with a stick, dust particle comes out. This phenomenon is an example of …………….. law of motion. C)The momentum of an object is product of its mass and …………….. D)The forces are said to be balanced, if net force is ……………

Posted by Adnan Khan 3 years, 7 months ago

CBSE > Class 09 > Science

2 answers

Deepak Kumar Sahu 3 years, 7 months ago

A. Third B. First C. Velocity of the object 3. Zero

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Sara Ali 3 years, 7 months ago

A) third B) first C) velocity D) zero (0)

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ANSWER

Which of the following can sometimes be ‘zero’ for a moving body? i. Average velocity ii. Distance travelled iii. Average speed iv. Displacement (a) Only (i) (b) (i) and (ii) (c) (i) and (iv) (d) Only (iv)

Posted by Adnan Khan 3 years, 7 months ago

CBSE > Class 09 > Science

2 answers

Ranjeet Kumar Pandit?? 3 years, 7 months ago

Option no.4. Only iv means displacement

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Dhirendra Pratap Singh 3 years, 7 months ago

Option (c) Description-both average velocity & displacement may be zero for a moving body.

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ANSWER

Suppose a boy is enjoying a ride on a marry-go-round which is moving with a constant speed of 10 m/s. It implies that the boy is: (a) At rest (b) Moving with no acceleration (c) In accelerated motion (d) Moving with uniform velocity

Posted by Adnan Khan 3 years, 7 months ago

CBSE > Class 09 > Science

2 answers

Dhirendra Pratap Singh 3 years, 7 months ago

Since on merry-go- round direction keeps changing at every instant of time therefore it will be accelerated motion

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Dhirendra Pratap Singh 3 years, 7 months ago

It implies that the boy is in accelerated motion Option (c).In accelerated motion✓

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ANSWER

The process of plasmolysis in plant cell is defined as: (a) Breakdown of plasma membrane in hypotonic solution. (b) Shrinkage of cytoplasm in hypertonic medium. (c) Shrinkage of Nucleoplasm. (d) None of these.

Posted by Adnan Khan 3 years, 7 months ago

CBSE > Class 09 > Science

1 answers

Vaishali Ojha 3 years, 7 months ago

The answer is -shrinkage of cell in hypertonic solution

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ANSWER

Posted by Adnan Khan 3 years, 7 months ago

CBSE > Class 09 > Science

2 answers

Sameer Mohammad 3 years, 7 months ago

Colorofil

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Sameer Mohammad 3 years, 7 months ago

Faltu ke question mat pucho

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ANSWER

You must have observed that a fruit when unripe is green but it becomes beautifully coloured when ripe. According to you what is the reason behind this colour change. (a) Chloroplasts change to chromosplasts (b) Chromosplasts change to chromosomes (c) Chloroplasts change to chromosomes (d) Chromosplasts change to chloroplasts 17. The process of plasmolysis in plant cell is defined as: (a) Breakdown of plasma membrane in hypotonic solution. (b) Shrinkage of cytoplasm in hypertonic medium. (c) Shrinkage of Nucleoplasm. (d) None of these.

Posted by Adnan Khan 3 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 3 years, 5 months ago

The change in color of the fruits on ripening is a chemical change.
It occurs due to the formation of new enzymes in the fruits.
Enzymes help in ripening of fruits.
An unripe fruit is green because it contains chloroplasts in its skin.
Towards ripening of the fruit,the chloroplasts are changed into chromoplasts which gives the fruit attractive non-green colour.

Plasmolysis is the process in which plant cell will lose the water and turgor pressure after being placed in hypertonic solution. During plasmolysis loss of turgor pressure can force the detachment of protoplast from the cell wall which will result into shrinking of protoplast. Plasmolysis is driven by vacuole. Plasmolysis is a reversible process and addition of hypotonic solution can lead the expansion of protoplast and reinstatement of original turgor pressure. During the plasmolysis majority of osmotic water flows into the central vacuole and drastic changes in protoplast size and shape can affect the subcellular architecture of the plant cell.

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ANSWER

Which of the following is an incorrect statement in reference with observation in Rutherford’s α-particle scattering experiment? (a) Some of the α-particles rebound after hitting the gold foil (b) Some of the particles deflected from their path (c) Some of the particles not pass through the gold foil (d) Most of the particles pass straight through the gold foil

Posted by Adnan Khan 3 years, 7 months ago

CBSE > Class 09 > Science