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Raja Lakshmi Subramanian 7 years, 5 months ago

If you add turmeric to acid there will be no colour change but if you add turmeric in base it changes into red. If you add small amount of turmeric to washing soap it will change into red colour

4Thank You

Samita Lenka 7 years, 5 months ago

Arshpreet are u of aps 7th e

ANSWER

What are the carbohydrate that can be digested by Amoeba but not by ruminant why why

Posted by Rohit Kumar 7 years, 5 months ago

CBSE > Class 07 > Science

2 answers

Samita Lenka 7 years, 5 months ago

Yes arshpreet is right

Arshpreet Kaur 7 years, 5 months ago

beacuse carbohydrates have some acids in them that can digest by amoeba but not by ruminants

ANSWER

What is scientific name of mulbery tree

Posted by Vijendra Solanki 7 years, 5 months ago

CBSE > Class 07 > Science

2 answers

Vidushi Mishra 7 years, 5 months ago

Bombyx mori

Abhipsa Patnaik 7 years, 5 months ago

Morus

ANSWER

What is litmus paper and what is its ise

Posted by Piyush Pal 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Konkana Bhattacharjee 7 years, 5 months ago

The litmus paper is an indicator. It is used to indicate which is an acid or which is a base .

ANSWER

What is antax

Posted by Kamlesh Tripathi 7 years, 5 months ago

CBSE > Class 07 > Science

2 answers

Abhipsa Patnaik 7 years, 5 months ago

Anthrax is a bacteria which causes a fatal disease called sorter's disease

Vikas Singh 7 years, 5 months ago

Anthrax is a bacteria which cause sorter desease

ANSWER

Magnesium (mg) +oxygen (o2) (mgo)

Posted by Kirti Yadav 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Utkarsh Patel 7 years, 5 months ago

Magnesium oxide(mgo)

ANSWER

Name the acid-base indicator extracted from lichens

Posted by Krish Gandhi 5 years, 9 months ago

CBSE > Class 07 > Science

1 answers

Sanjay Jhalani 7 years, 5 months ago

Litmus paper

ANSWER

What are saptrotrophs?

Posted by Dimple Duggal 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Sonali Aggarwal 7 years, 5 months ago

Any organism, esp a fungus or bacteria that lives and feeds on dead organic matter.

ANSWER

Periodic oscillation in pendulum clock through gear and notch

Posted by Mamta Tripathi 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

One of the most well-known periodic motions is that of a simple pendulum.

A simple pendulum consists of a small metallic ball or a piece of stone suspended from a rigid stand by a thread. The metallic ball is called the bob of the pendulum is free to swing back and forth.

ANSWER

What is the another name if siriculture

Posted by Yashvanth Lakshman 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 7 years, 5 months ago

The rearing of silkworms for obtaining silk is called Sericulture. Sericulture, or silk farming, is the rearing of silkworms for the production of raw silk.

ANSWER

What is the other name of silk worm?

Posted by Asim Sibhai 7 years, 5 months ago

CBSE > Class 07 > Science

6 answers

Asim Sibhai 7 years, 5 months ago

Answer is caterpillars or larva

Abhipsa Patnaik 7 years, 5 months ago

Larva, caterpillar, Bombyx mori

Eshani Maurya 7 years, 5 months ago

Bombyx Is right

Aditi Pradhan 7 years, 5 months ago

Silk moth

Tushar Shembekar 7 years, 5 months ago

Morus alba

Subham Samanta 7 years, 5 months ago

Bombyx mori

ANSWER

Name the plant on which silk worm feed?

Posted by Asim Sibhai 7 years, 5 months ago

CBSE > Class 07 > Science

5 answers

Asim Sibhai 7 years, 5 months ago

Answer is mulbery trees

Eshani Maurya 7 years, 5 months ago

Mulbery leaves

Aditi Pradhan 7 years, 5 months ago

Mulberry plant

Yashvanth Lakshman 7 years, 5 months ago

Mulberry

Sakshi Mishra 7 years, 5 months ago

Mulberry tree

ANSWER

How would you test the presence of starch

Posted by Manvi Singh 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Manvi Singh 7 years, 5 months ago

Steps to test the presence of starch of leaves : 1. A fersh leaf is taken. 2. The leaf is boiled in water for few minutes to kill the cells in the leaf 3. Now dip this leaf in iodine solution. 4. These is because leaf prepare i.e starch. Reacts with iodine to give blue-black color

4Thank You

ANSWER

What is assumilation

Posted by Akhilesh Raikar 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 7 years, 5 months ago

The conversion of absorbed food in complex substances such as proteins and vitamins required by body is called assimilation. In other words, assimilation is the conversion of absorbed food (nutrients) into living tissues. Through the process of assimilation our cells are supplied with oxygen and nutrients.

ANSWER

What is laboratory thermometer?

Posted by Krishna Chavan 7 years, 5 months ago

CBSE > Class 07 > Science

2 answers

Utkarsh Abhigyan 7 years, 5 months ago

A thermometre which is used for laboratory purpous to measure the temprature of ibjects or chemicals etc. Is called a laboeatory thermometre

Aman Aman 7 years, 5 months ago

It is a object used to mesure the temperature of an object.it has mercury on his bulb.

ANSWER

What is perstilisis

Posted by Kanha Goyal 7 years, 5 months ago

CBSE > Class 07 > Science

2 answers

Mahi Sandhu 7 years, 5 months ago

Yes

Kanha Goyal 7 years, 5 months ago

It is the process in which involuntary muscles of oesophagus squeeze and push food to stomach that movement is called perstilsis

ANSWER

State similarities and differences between the laboratory thermometer and clinical thermometer

Posted by Abhi Bansal 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Aman Aman 7 years, 5 months ago

Simmalirities- Laboratory and clinical thermometer both are used to messure the temperature and they has mercury in their bulbs. Differences- Laboratory thermometer is used to messure the temperature of an object and clinical thermometer is used to messure the temperature of a person. Clinical thermometer has a clink near the bulb and the laboratory thermometer has no clink near the bulb.

ANSWER

Disscus why wearing more layers of clothing during winter keep us warmer than wearing just one thick piece of clothing

Posted by Abhi Bansal 7 years, 5 months ago

CBSE > Class 07 > Science

0 answers

ANSWER

Soil profile

Posted by Urvi Bindra 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 7 years, 5 months ago

Soil Profile: If you examine the sides of a ditch that has recently been dug up or the sides of a road on a hill, you will find that the soil forms layers of particles of different sizes. You will notice that each layer is different from the other in texture, colour and chemical composition. Even the thickness of each layer is not the same.
A vertical section that shows different layers of soil is called a soil profile. Each layer is called a horizon.
Horizons are classified into 4-types. They are,
• Top soil or Horizon-A
• Middle layer or Horizon-B
• Horizon-C
• Bed rock

ANSWER

Who is father of biology ?

Posted by Eshani Maurya 7 years, 5 months ago

CBSE > Class 07 > Science

2 answers

Eshani Maurya 7 years, 5 months ago

Hi, yogita

Yogita Ingle 7 years, 5 months ago

Aristotle is known as the father of biology.“In the 4th century BC the Greek philosopher Aristotle traveled to Lesvos, an island in the Aegean teeming, then as now, with wildlife.
His contributions to zoology include vast quantities of information about the variety, structure, and behavior of animals; the analysis of the parts of living organisms; and the beginnings of the science of taxonomy. thus he has contributed much towards tozoology.

ANSWER

What is the short full form of Sulphuric acid

Posted by Harry Brar Brar 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Eshani Maurya 7 years, 5 months ago

H2so4

5Thank You

ANSWER

Difference between heat and temperature

Posted by Mukul Gahlot 5 years, 9 months ago

CBSE > Class 07 > Science

2 answers

Y.S. Poojitha 7 years, 5 months ago

Heat: * it is the form of energy. * It is the cause of temperature. Temperature: * it is the reliable measure of hotness or coldness of an object. * It is the effect of heat.

Harsha Vardhan 7 years, 5 months ago

If someone have a viral fever you can go and touch them their body will be so hot you can feel it. Temperature means it gives the correct temperature hot or cold

ANSWER

What is the brainfreeze

Posted by Krishlay Yadav 7 years, 5 months ago

CBSE > Class 07 > Science

0 answers

ANSWER

Balencing equation

Posted by Karam Chand Karam Chand 7 years, 5 months ago

CBSE > Class 07 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Steps Involved in Balancing a Chemical Equation:

Consider the chemical reaction between magnesium and oxygen to understand the steps involved in balancing a chemical equation.

Step 1:

Let us first write the word equation for this reaction.

Magnesium + Oxygen → Magnesium oxide

Step 2:

Write the chemical equation for the reaction between magnesium and oxygen.

Mg + O₂ → MgO

Step 3:

Count the number of atoms of an element occurring on both L.H.S. and R.H.S. in this equation.

Mg + O₂ → MgO

This is an unbalanced equation.

Step 4:

To balance a chemical equation, first draw boxes around each formula. Do not change anything inside the boxes while balancing the equation.

Choose a reactant or a product which has the maximum number of atoms in it.

In that compound, select the element which has the maximum number of atoms. In this equation we shall select MgO i.e. magnesium oxide and the element oxygen in it.

To balance the oxygen atoms, let us multiply magnesium oxide molecule by 2 on the right hand side.

Step 5:

There are two oxygen atoms on either side of the equation but one magnesium atom on the reactant's side and two on the product's side. Therefore, multiply the magnesium atom by 2 on the left hand side.

Therefore, the number of atoms of each element of reactants = The number of atoms of each element of products.

Step 6: Writing Specific Conditions on the Arrow

The reaction is carried out in the presence of ‘Heat’. On heating, magnesium combines with oxygen present in air to form magnesium oxide.

Step 7: Writing Symbols of Physical States

Using these steps, you can balance any chemical equation.

The various ways in which a chemical equation can be made more informative are : (i) By indicating the physical states of the reactants and products. Example: Solid state is indicated by the symbol (s).

(ii) By indicating the heat changes taking place in the reaction. For Example: An exothermic reaction is indicated by writing “+Heat” or “+Heat energy” or “+Energy” on the products side of an equation.

(iii) By indicating the “conditions” under which the reaction takes place.

Example: Delta stands for heat which is written on the arrow sign in the equation.

ANSWER

Chemical formulas

Posted by Karam Chand Karam Chand 7 years, 5 months ago

CBSE > Class 07 > Science

0 answers

ANSWER

what do organisms need to take food

Posted by Lucky Agarwal 7 years, 5 months ago

CBSE > Class 07 > Science

3 answers

Priya Verma 7 years, 5 months ago

Organism need to take to get energy and for growth

༄『????? 』 ᭄࿐ . 7 years, 5 months ago

The organisms need to take food to obtained energy to obtain menerals for growth and development to repair the damaged part of body

Lucky Agarwal 7 years, 5 months ago

Organisation take food to meet their requirement of nutrition and energy nutrition and energy in abled organisation to grow rapidly quotation and repair the damage body part