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Ravi 31/01/2015 in  Class VI-VIII Tuition

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Kamaladevi replied | 06/02/2015

Ans: The combining capacity of an atom is called its valency. Actually it can be defined as the number of electrons that an atom may lose (or) gain during a chemical reaction (or) the number of electrons shared.
Ex: In water molecule H?O (H - O -- H)
Valency of Hydrogen is 1 (as it combines with Oxygen atom by one single bond) and valence electrons in Hydrogen ...  more»
Ans: The combining capacity of an atom is called its valency. Actually it can be defined as the number of electrons that an atom may lose (or) gain during a chemical reaction (or) the number of electrons shared.
Ex: In water molecule H?O (H - O – H)
Valency of Hydrogen is ‘ 1 ‘ (as it combines with Oxygen atom by one single bond) and valence electrons in Hydrogen = 1
Valency of Oxygen is ‘2’ (as it combines with two Hydrogen atoms by two bonds), but valence electrons in oxygen = 6
The numbers of electrons in outermost shell (or) valency shell of an atom are called valency electrons.
Based on valency electrons the group number of an atom can be found.
Ex: Number of valence electrons in chlorine are 7 so it belongs to VIIA - group, but its valency is 1.

So, it is to be understood that some times valency is equal to valence electrons, but not all the time. «less

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Anjali replied | 02/12/2015

Valency is the number of electrons required to be accepted/lose/shared by the atom of an element in order to complete its outer shell octet. On the other hand valence electrons is the number of electrons present in the outermost shell of the atom of an element.

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Ravi 31/01/2015 in  Class VI-VIII Tuition

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Jitender replied | 09/02/2015

Speed is a scalar quantity that refers to how fast an object is moving. whereas Velocity is a vector quantity that refers to the rate at which an object changes its position.

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Khushbu replied | 11/02/2015

Speed is a scalar quantity and velocity is a vector quantity.

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Ravi 31/01/2015 in  Class VI-VIII Tuition

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Ram Mohan replied | 08/02/2015

The full form of 'Sin' and 'Cos' are 'Sine' and 'Cosine' respectively.These words do not carry any meaning on their own, unless each of them is followed by an 'angle'. Ex: Sine'A' OR Sin'A' and Cosine'B' OR Cos'B' which means that Sin'A' Stands for the Sine ratio of angle'A" Which is defined in Trigonometry, as the Ratio of the Opposite side of Angle'A' to the Hypotenuse, of a...  more»
The full form of 'Sin' and 'Cos' are 'Sine' and 'Cosine' respectively.These words do not carry any meaning on their own, unless each of them is followed by an 'angle'. Ex: Sine'A' OR Sin'A' and Cosine'B' OR Cos'B' which means that Sin'A' Stands for the Sine ratio of angle'A" Which is defined in Trigonometry, as the Ratio of the Opposite side of Angle'A' to the Hypotenuse, of a Right angled. Triangle containing this angle'A'. Similarly,Cos'B' is defined as the ratio of the adjacent side of angle'B' to the Hypotenuse of a Right angled Triangle containing this angle 'B'. «less

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Jayasyamala replied | 14/02/2015

If we take a right triangle ABC with angle B right angle then sine of angle C is the ratio of opposite side by hypotenuse i.e., AB by AC.
And cosine of angle C is adjacent side by hypotenuse i.e., BC by AC.

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Ravi 31/01/2015 in  Class VI-VIII Tuition

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Apurba replied | 04/02/2015

In short, Flowers also have male and female parts..

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Ravi replied | 06/02/2015

A stigma ( female part ) is the top of the pistil that receives pollen during fertilization. A stamen ( Male part ) is the plant part that distributes pollen and includes the anther and filiment. Stamen is a male part, stigma is female

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Sharada replied | 12/04/2015

The basic reaction will be 2Mg+O2 ->2MgO. N+O2->NO2.
MgO+H2O->Mg(OH)2. 3NO2+H2O->2HNO3+NO

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Rubnawaz replied | 14 Mar

Metal as well as non metal reacts with oxygen to form respective oxides when these oxides reacts with water metal form bases and non metal form acids.

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Ravi 31/01/2015 in  Class VI-VIII Tuition

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Raman replied | 27/03/2015

Direction will be indicated by the sign (positive quantities point in +x direction, while negative quantities point in the ?x direction). Determining which direction is positive and which negative is entirely arbitrary.

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Praful replied | 01/04/2015

Opposite direction of object is negative sign otherwise positive ...

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Ravi 31/01/2015 in  Class VI-VIII Tuition

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Anitha replied | 04/02/2015

The principle focus or focal point of a mirror is the point at which light that is incident parallel to the
aixs comes together at a point. -

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Abuzar replied | 18/02/2015

At infinity

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Ashwini 29/01/2015 in  Class VI-VIII Tuition

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Shanthi replied | 04/12/2015

tomato is botanically fruit

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Gyanendra replied | 13/04/2016

fruit

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Rekha 29/01/2015 in  Class VI-VIII Tuition

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Gyanendra replied | 13/04/2016

there are 46 22 pairs of autosomes and 1 chromose pair of x and y which decide a boy or girl in the offsprind

hope u got ur answer right

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Lakshita Sharma replied | 12/06/2016

there are 46 chromosomes in our body in the form of 23 pairs

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Mohammad 24/01/2015 in  Class VI-VIII Tuition

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Vishesh replied | 28/01/2015

250

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Ravi replied | 28/01/2015

1000-2000

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Padala 23/01/2015 in  Class VI-VIII Tuition

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Abhijit replied | 23/11/2015

23 pairs

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Priya replied | 06/03/2016

23 pairs

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Subhash replied | 12/02/2016

1.Judge student's caliper by giving him/ her small questions first.
2.Start removing the old weaknesses. Let it take time.
3.Teach step by step and tell how answer has been derived.
4.Also tell easier method of solving question.
5.Fundamental and basics are 2 separate things understand first. I van explain.
6. Most important to tell this differance.

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Subhash replied | 12/02/2016

Correct spelling of difference please

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Pranav replied | 31/01/2015

You can get paid through online transfer in ur bank account in advance.

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M Ramesh replied | 03/02/2015

Students will deposit in your bank account or if you have paypal account it is better to get paid

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Rakesh 14/01/2015 in  Class VI-VIII Tuition

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Keshav replied | 28/01/2015

1x1=1

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Ravi replied | 29/01/2015

.32 approx

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Priyanka 11/01/2015 in  Class VI-VIII Tuition

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Vaibhtech replied | 26/01/2015

Yes, agree with Avinash. Depends on quality of classes.

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Ravi replied | 27/01/2015

500/hr

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Bijoy replied | 23/01/2015

Within one week.

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Premiertuition.com replied | 26/01/2015

nice

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Amit 10/01/2015 in  Class VI-VIII Tuition

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Dr Ashok replied | 27/01/2015

Register yourself as a Premium Member so that you get the contact details of the students

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Ravi replied | 27/01/2015

make profile and upgrade your accounts

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Amit 10/01/2015 in  Class VI-VIII Tuition

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Dr Ashok replied | 31/01/2015

The point at which a consumer reaches optimum utility, or satisfaction, from the goods and services purchased given the constraints of income and prices. This is based on the assumption that consumers attempt to get maximum utility from their purchases and that competition exists for the item in question. Equilibrium is reached when the consumer purchases the assortment of goods...  more»
The point at which a consumer reaches optimum utility, or satisfaction, from the goods and services purchased given the constraints of income and prices. This is based on the assumption that consumers attempt to get maximum utility from their purchases and that competition exists for the item in question. Equilibrium is reached when the consumer purchases the assortment of goods which best meets his satisfaction requirements given his financial constraints. «less

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Raj Kumar replied | 03/02/2015

When consumers make choices about the quantity of goods and services to consume, it is presumed that their objective is to maximize total utility. In maximizing total utility, the consumer faces a number of constraints, the most important of which are the consumer's income and the prices of the goods and services that the consumer wishes to consume. The consumer's effort to maximize...  more»
When consumers make choices about the quantity of goods and services to consume, it is presumed that their objective is to maximize total utility. In maximizing total utility, the consumer faces a number of constraints, the most important of which are the consumer's income and the prices of the goods and services that the consumer wishes to consume. The consumer's effort to maximize total utility, subject to these constraints, is referred to as the consumer's problem. The solution to the consumer's problem, which entails decisions about how much the consumer will consume of a number of goods and services, is referred to as consumer equilibrium. «less

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Pavitra 10/01/2015 in  Class VI-VIII Tuition

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Sudhansu Bhushan replied | 22/02/2015

MOTIVATION??
Its like owning the worlds best car with all the parts working perfectly, the car has the capabilities to go fast with the greatest fuel efficiency. But if there is no driver and or if the driver does not ignite the car and start it, the car does not even move. Motivation is like that spark for the engine. This is what makes the human engine move. You may have...  more»
MOTIVATION??
Its like owning the worlds best car with all the parts working perfectly, the car has the capabilities to go fast with the greatest fuel efficiency. But if there is no driver and or if the driver does not ignite the car and start it, the car does not even move. Motivation is like that spark for the engine. This is what makes the human engine move. You may have the best talents or acquired the best skills but it you do not have motivation you will not reach far. Motivation is the driver which drives you to do what you are doing.

Motivation is the desire to achieve a Goal. Motivation with enthusiasm and energy really move us forward in life. «less

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Ravi replied | 28/04/2015

to accomplish a goal,we need extra energy

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Ravi replied | 29/01/2015

Positive thinking belongs to our brain whereas the positive believing belongs to heart.

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Roslin replied | 21/02/2015

Positive thinking helps you use your abilities to the fullest. Positive believing is more than positive thinking. It is knowing that positive thinking will work. Positive believing is an attitude of confidence that comes from our heart. Having a positive attitude with out believing is nothing more than a wish/dream.

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Ravi replied | 28/04/2015

300/hr

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Gyanendra replied | 13/04/2016

300 - 400

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Ravi replied | 28/04/2015

g varies

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Rob replied | 16 Apr

I think a better question would be "is there a difference in the weight of an object at the North Pole and the South Pole?"

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Anita 08/01/2015 in  Class VI-VIII Tuition

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Avinash replied | 27/01/2015

Because density of ice is lesser than water.

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Ravi replied | 28/01/2015

Because density of ice is lesser than water.

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Anita 08/01/2015 in  Class VI-VIII Tuition

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Shruti replied | 26/01/2015

The ratio of the density of a substance to the density of a standard, usually water for a liquid or solid, and air for a gas.

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Ravi replied | 27/01/2015

mass of any volume of a substance compared to the mass of an equal volume of water ( or any other medium one may want to compare with )

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Pavitra 07/01/2015 in  Class VI-VIII Tuition

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Roslin replied | 25/02/2015

The Sun produces energy by the nuclear fusion of hydrogen into helium in its core.

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Gyanendra replied | 13/04/2016

nuclear fission

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