Thank you

Element will have valency 4 and will for covalent bond with chloride with formula XCl4

If an element X is placed in group 14, what will be the formula and the nature of bonding of its chloride?

Answer:

The formula will be XCl4. The element X of group 14 will have 4 valence electrons. So, it shares its 4 electrons and form covalent bond with 4 chlorine atoms.

 Homologous series is defined as a systematic order of organic compounds having same functional group that can be represented by same general formula and prepared by same method.

Each member of a homologous series is known as homologue and this phenomenon is called homology. Properties of homologous series are:

1. Two consecutive members of a homologous series differs each other in their composition by –CH2​ unit.

Example:Alcohol (−OH)−CH_3​OH,CH₃​CH_2​OH,CH_3​CH_2​CH_2​OH

 

Yes 5 number per not book

Yes... Milte h

Obviously yes...bilkul milte hai. But woh marks appke internal marks mai add hote hai

Law of magnetic poles

Thanks for your answer your answer helped me a lot

Objects can be positively charged, negatively charged or neutral (no charge). A substance that gains electrons becomes negatively charged, while a substance that loses electrons becomes positively charged. When a charged object comes near to another object they will either attract or repel each other. If the charges are the same - they repelIf the charges are opposite - they attractIf one is charged and the other is not - they attract Like charges repel. Unlike charges attract. Now as quantum mechanics suggests that attraction and repulsion is because of virtual transfer of photons.And it is obvious that positively charged particles will have photons in excess i.e, positive charge is more so when 2 like charges contact each other both the charges tend to transfer their virtual photons between themselves as a result of this electrostatic force of repulsion acts between the 2 positively charged particles and they repel each other. OPPOSITE CHARGES ATTRACT:- As positively charged particles have excess of virtual photons and negatively charged particles are photon deficient both the particles will tend to attract each other as positively charged particle will tend to transfer its virtual photons to negatively charged particle and it will tend to accept those virtual photons.Thus, electrostatic force of attraction is created and they attract each other.

Objects can be positively charged, negatively charged or neutral (no charge).

A substance that gains electrons becomes negatively charged, while a substance that loses electrons becomes positively charged.

When a charged object comes near to another object they will either attract or repel each other.

If the charges are the same - they repelIf the charges are opposite - they attractIf one is charged and the other is not - they attract

Like charges repel. Unlike charges attract.

Now as quantum mechanics suggests that attraction and repulsion is because of virtual transfer of photons.And it is obvious that positively charged particles will have photons in excess i.e, positive charge is more so when 2 like charges contact each other both the charges tend to transfer their virtual photons between themselves as a result of this electrostatic force of repulsion acts between the 2 positively charged particles and they repel each other.

OPPOSITE CHARGES ATTRACT:-

As positively charged particles have excess of virtual photons and negatively charged particles are photon deficient both the particles will tend to attract each other as positively charged particle will tend to transfer its virtual photons to negatively charged particle and it will tend to accept those virtual photons.Thus, electrostatic force of attraction is created and they attract each other.

It is the electromagnetic force that causes repulsion between like charges, so that protons should all repel each other and nucleus is blown apart. The weaker forces play an important role in nuclear processes even though these are less powerful in comparison to electromagnetic forces.

It is the electromagnetic force that causes repulsion between like charges, so that protons should all repel each other and nucleus is blown apart. The weaker forces play an important role in nuclear processes even though these are less powerful in comparison to electromagnetic forces.

Stacked means stacked is means

Stacked is means stacked

Stacked means stacked

Stacked means stack

Stacked means

Chaos means

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thank u

Chaos means any confused, disorderly mass
a state of utter confusion or disorder; a total lack of organization or order. any confused, disorderly mass
CHAOS= अफरा तफरीह ,  गड़बड़ी , अस्तव्यस्तता 

A dioptre (British spelling) or diopter (American spelling) is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres. (1 dioptre = 1 m−1.)

Thanks sir\mam

1 dioptre of power of a lens is described as the unit of measurement of the optical power of a lens or curved mirror equivalent to the reciprocal of focal length (f). Measurement of the focal length in a meter.

The SI unit of power of lens is dioptre whose focal length is one meter, which is denoted by the letter D.

1 dioptre (D) = P = 1/f

Where f = focal length

ncert books and  sample papers are enough

Sample papers help students analyse their strengths and weaknesses so that they can focus on weaker sections.

• When students work on improving their weaker sections, they perform better with practising sample papers.
• This enhances their confidence and they do their best to get good marks.
• Also, not just weaknesses, students can also practice their strong sections with sample papers to increase their marks. 

Give the answer

I don't want copied answers Mr. Seth...you know I can get written answers by Google Baba too but the fact is that I'm here cause I want views from peoples of my level not from Graduates...

Many factors are responsible for motivating youngsters towards alcohol or drugs. Curiosity, need for adventure and excitement, experimentation are the initial causes of motivation. Some youngsters start consuming drugs and alcohol in order to overcome negative emotions (such as stress, pressure, depression, frustration) and to excel in various fields. Several mediums like television, internet, newspaper, movies etc. are also responsible for promoting the idea of alcohol to the younger generation. Amongst these factors, reasons such as unstable and unsupportive family structures and peer pressure can also lead an individual to be dependant on drugs and alcohol.

Preventive measures against addiction of alcohol and drugs:

(a) Parents should motivate and try to increase the will power of their child.

(b) Parents should educate their children about the ill-effects of alcohol. They should provide them with proper knowledge and counselling regarding the consequences of addiction to alcohol.

(c) It is the responsibility of the parent to discourage a child from experimenting with alcohol. Youngsters should be kept away from the company of friends who consume drugs.

(d) Children should be encouraged to devote their energy in other extra- curricular and recreational activities.

(e) Proper professional and medical help should be provided to a child if sudden symptoms of depression and frustration are observed.

I guess You both have copied from the same place,no... :D

Polysaccharides can be broadly classified into two classes: Homo-polysaccharides – are made up of one type of monosaccharide units. ex: cellulose, starch, glycogen. Hetero-polysaccharides – are made up of two or more types of monosaccharide units. Types Of Polysaccharides Glycogen: It is made up of a large chain of molecules. ... Cellulose: The cell wall of the plants is made up of cellulose. ... Starch: It is formed by the condensation of amylose and amylopectin. ... Insulin: It is made up of a number of fructofuranose molecules linked together in chains.

Polysaccharides can be broadly classified into two classes: Homo-polysaccharides – are made up of one type of monosaccharide units. ex: cellulose, starch, glycogen. Hetero-polysaccharides – are made up of two or more types of monosaccharide units.

Types Of Polysaccharides

• Glycogen: It is made up of a large chain of molecules. ...
• Cellulose: The cell wall of the plants is made up of cellulose. ...
• Starch: It is formed by the condensation of amylose and amylopectin. ...
• Insulin: It is made up of a number of fructofuranose molecules linked together in chains.

refractive index = sin i / sin r
                          = sin45/sin30
                          = (1/√2)/(1/2)
                          = 2/( √2)
                           =  √2

Refractive index of a medium is defined as the factor by which speed of light reduces as compared to the speed of light in vacuum.

→ More (less) refractive index implies less (more) speed of light in that medium, which therefore is called denser (rarer) medium.

Calculation :

The refraction index, n, of a transparent medium is defined as the ratio of speed of light in vacuum to the speed of light in that medium.  The formula is n= c​/v

where the speed of light c=3×10⁸m/s and v is the speed of light in the desired medium which is given as v=2.4×10⁸m/s.

Therefore, n=3×10⁸m/s/ 2.4×10⁸m/s​=1.25.

Hence, the refractive index of the transparent medium is 1.25.

Refractive index of glass = speed of light in vacuum/ speed of light in glass ​
=3×10⁸m/s​ / 2×10⁸ km/s
=1.5

When red litmus paper is placed into a basic substance, it will turn blue. If it comes in contact with an acidic or neutral substance, it will remain red. Red litmus paper is meant to test only for an alkaline pH level. The blue litmus will turn red or pink when it comes into contact with an acidic solution below pH 4.5. Between 4.5 and 8.3 the paper will be purple. ... Litmus paper is NOT used to determine the pH level of a solution.

Okay... Wt is your question.. Plzz put it right

The balanced chemical equation for the electrolysis of water is

It can be observed from the balanced chemical equation that the volumes of hydrogen and oxygen produced during electrolysis are in the ratio 2:1. Thus, the volume of hydrogen gas collected in the process is double than that of oxygen.

Uses of a concave mirror:

1. In torch, search light, head lights etc. concave mirror is used as reflector.

2. It is used as dentist's head mirror.

Uses of a convex mirror:

1. It is used as reflector in street lamps.

2. It is used as a rear view mirror in vehicles

Self Induction: When there is a change in the current or magnetic flux of the coil, an opposed induced electromotive force is produced. This phenomenon is termed as Self Induction. When the current starts flowing through the coil at any instant, it is found that, that the magnetic flux becomes directly proportional to the current passing through the circuit. The relation is given as:

ϕ= I

ϕ = L I

Mutual Induction: We take two coils, and they are placed close to each other.  The two coils are P- coil (Primary coil) and S- coil (Secondary coil). To the P-coil, a battery, and a key is connected wherein the S-coil a galvanometer is connected across it. When there is a change in the current or magnetic flux linked with two coils an opposing electromotive force is produced across each coil, and this phenomenon is termed as Mutual Induction. The relation is given as:

ϕ = I

ϕ = M I

Working principle of electric motors

The working of an electric motor is based on the assumption that a conductive current generates a magnetic field around it. Consider the following situation,

Take two bar magnets, and leave a small space between the poles facing each other. Now, take a small conductive wire length and make a loop. Keep this connection between the magnets, so that it is still inside the magnet’s area of influence. Now for the final part. Attach loop ends to battery terminals.

As electricity flows through your simple circuit, you will find that your loop “moves.” The magnet’s magnetic field interferes with that generated by the conductor’s electrical current flow. Because the loop has become a magnet, it will draw one side of it to the magnet’s north pole, and the other to the south pole. That causes the loop to rotate continuously. This is the idea of an electric motor working.

Cationation :- carbon can bond with other carbon atom and it forms a long chain. Tetravalent :- it has 4 valence electrons and it's also make a covalent bond.

Carbon is a versatile element and is found in many different chemical compounds, including those found in space. Carbon is versatile because it can form single, double, and triple bonds. It can also form chains, branched chains, and rings when connected

The upward movement of water and dissolved mineral salts from roots upwards to the leaves and other aerial parts is called Ascent of Sap. (It is called the sap as it contains many dissolved minerals). This water is conducted upwards to the leaves through xylem. Ascent of sap involves root pressure and transpiration pull.

Q1. What are the trophic levels? Give an example of a food chain and state the different trophic levels in it.

Solution:

In the food chain, the transfer of food or energy takes place at various levels and these levels are known as trophic levels.

Example:

Grass → Goat → Man

In the food chain,

• Grass represents the first trophic level
• The goat represents the second trophic level
• Man represents the third trophic level

Q2. What is the role of decomposers in the ecosystem?

Solution:

Following is the role of a decomposer in the ecosystem:

• They act as a cleansing agent of the environment by decomposing the dead plants and animals
• They help in recycling the nutrients
• They provide space for new beings in the biosphere by decomposing the dead
• They help in putting back the various elements into water, soil and air for the reuse of producers like crop plants.

For more click on the given link:

 

<a href="https://mycbseguide.com/blog/ncert-solutions-class-10-science-our-environment-part-1/" ping="/url?sa=t&source=web&rct=j&url=https://mycbseguide.com/blog/ncert-solutions-class-10-science-our-environment-part-1/&ved=2ahUKEwiA6rKM-6ztAhUE4jgGHX06Ca8QFjAAegQIAxAC" rel="noopener" target="_blank">NCERT Solutions for Class 10 Science Our Environment Part 1</a>

<a href="https://mycbseguide.com/blog/ncert-solutions-class-10-science-our-environment-part-2/" ping="/url?sa=t&source=web&rct=j&url=https://mycbseguide.com/blog/ncert-solutions-class-10-science-our-environment-part-2/&ved=2ahUKEwiA6rKM-6ztAhUE4jgGHX06Ca8QFjABegQIAhAC" rel="noopener" target="_blank">NCERT Solutions for Class 10 Science Our Environment Part 2 |</a>

Beacuse it is basic in nature,and the substance which is basis in nature are able to neutralize the effect if acid(HCL) in the stomach.when stomach production HCL increases its caused hyperacidity which can be neutralize by antacid..ex-eno

Because it is a basic salt

Sodium hydrogen carbonate is an essential ingredient in most antacids because

• It is slightly alkaline in nature. 
• It is very fast in reaction with the acid present in the stomach
• It reacts to form carbon dioxide with helps us to produce blurps which give a relieving feeling

ಲೋ ಅದು ಸಿಗುತ್ತೆ ಅಂತ ಸಿಗಿತ್ತೆ ಅಂತ ಬರ್ದಿದ್ದೀನಿ ADJUST ಮಾಡ್ಕೊಂಡ್ ಓದಕೋ ಸರಿನ

ಲೋ ರಹಮಾನ್ ನಂಗೆ ಗೊತ್ತಿಲ್ಲ ಕಣೋ ಮಚ್ಚಾ ಬೇಜಾರ್ ಮಾಡ್ಕೋಬೇಡ ಕಣಲೇ ಗೂಗಲ್ ಮಾಡು ಮಚ್ಚ ಸಿಕ್ಕೇ ಸಿಗಿತ್ತೆ?????

Calcium hydroxide Ca(OH) 2

A n s w e r: [Ca (OH)2] Calcium hydroxide or slaked lime
explanation:
[Ca (OH)2] Calcium hydroxide commonly known as slaked lime, on treatment with chlorine, yields bleaching powder.

Dry slaked lime,Ca(OH)₂ is the substance which on treattment with chloride yields bleaching powder

Where is figure?

Give full questions

It is called carpel and also pistil

Carpel

1. The female reproductive part in a plant is called the pistil.
2. It consists of three parts- stigma, style and ovary.
3. The sticky part at the top called a stigma.
4. A thin tube passing down is called a style.
5. A swollen sac-like structure at the bottom is called an ovary. 
6. The pollen grains are transferred onto the stigma which then travels down the style into the ovary, where it meets with the ovules and fertilization takes place.