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ANSWER

What is the importance of DNA copying in reproduction

Posted by Abhijit Bhardwaj 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Rachit Gupta 3 years, 1 month ago

DNA is the information site for protein and each type of protein provides a specific body design. Thus it is the DNA molecule that determines body design of an individual. Thus it can be said that it is DNA molecule that gets transferred form parents to offsprings and makes them look similar

Pawandeep Kaur Pawandeep Kaur 3 years, 1 month ago

1:-DNA copying provides the cellular apparatus to the daughter cells. 2:-DNA copying control the all functioning of the daughter cells. 3:-DNA copying retain the traits

ANSWER

Method of birth control

Posted by Sanjukta Buragohain 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Muskan Sharma 3 years, 1 month ago

There are various contraceptive methods to avoid pregnancy: 1. Natural method - Sexual intercourse is safe 1 week before or after menstruation. 2. Barrier method (mechanical method): In this, a barrier is placed between male and female reproductive parts like copper-T, loop, condom, etc. 3. Hormonal method: Hormonal balance is changed to prevent the release of male or female germ cells eg. - oral pills. 4. Surgical method: surgical operation is performed. It is of two types- tubectomy (in which fallopian tube is cut and binded to prevent fertilization, also known as tubal ligation) and vasectomy ( in which vas deferens is cut and binded to prevent the ejaculation of sperm).

ANSWER

On the basis of melting point, differentiate between metals and non-metals .

Posted by Prakrity Newar 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Muskan Sharma 3 years, 1 month ago

The atoms in metals are closely packed. So, they need more energy to move them apart and convert them into liquid. So metals, in general, have high melting and boiling point while non-metals are held by weak intermolecular force of attraction, so less heat required to break them. As a result, they have low melting and boiling points.

ANSWER

Calculate the value of each resistor when the effective r is 15 ohm if they are connected in series and is 3½ohm if connected in ll

Posted by Iffat Gufran 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Pawandeep Kaur Pawandeep Kaur 3 years, 1 month ago

How many resistors are connected

ANSWER

All the best for science board exam to

Posted by Sneha Kadyan 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Ishika Dhall 3 years, 1 month ago

Thanki

ANSWER

Advantages of new land law of octaves

Posted by Maahi Sharma 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Sanjukta Buragohain 3 years, 1 month ago

Newland law of octaves was the first to classification based on the atomic weight ,linking the properties of the elements to there atomic mass

Gaurav Choudhary 3 years, 1 month ago

He was the first to arrange elements in increasing atomic mass.

Sneha Kadyan 3 years, 1 month ago

Disadvantages too hai

ANSWER

Assertion:A geneticist crossed a pea plant having violet flowers with a pea plant with white flowers,he got all violet flowers in first generation. Reason:White colour gene is not passed on to next generation.

Posted by Jahnavi M 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Laksh Mehta 3 years, 1 month ago

"Assertion is true but reason is false." Indeed, White colour is not shown in the first generation. But it is not because it is not passed. It is because of the fact that the dominant allele (violet) expresses over recessive allele (white). If we cross the first generation by selfing then we would be able to find that white character is transferred.

ANSWER

except carbon and silicon which elements possess the property of catenation

Posted by Mohit Kumar 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Shreyas Kumar Bhoi 3 years, 1 month ago

The most stable bond it forms is with atoms of the same element as it reaches octet state by doing so. This results in high catenation property. Sulphur has 2 electrons in its valence shell and cannot reach octet state by bonding with itself and hence has low catenation property

ANSWER

Wings of bat and wings of bird are?

Posted by Ghulam Hussain 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Pawandeep Kaur Pawandeep Kaur 3 years, 1 month ago

Analogous

𝒶𝓇𝒽𝒶𝒶𝓃 𝒶𝓇𝓈𝒽𝒶𝒹 3 years, 1 month ago

Analogous

Ghulam Hussain 3 years, 1 month ago

Homologous organ

ANSWER

How many isomer for Hexane tell any one if isomer

Posted by Devesh Anantharaj 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Sneha Kadyan 3 years, 1 month ago

CH3-CH-CH2-CH2-CH3

Subhash Pandey 3 years, 1 month ago

CH3-CH-CH2-CH2-CH3 | CH3

Subhash Pandey 3 years, 1 month ago

2-methyl pentane

ANSWER

Tell any element which have tetravalancy expert carbon (A Non Metal)

Posted by Devesh Anantharaj 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Subhash Pandey 3 years, 1 month ago

Silicon

ANSWER

On the basis of electronic configuration of 9 5X, the group number and period of the element ‘X’ is :

Posted by Mohammad Altamash 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Pawandeep Kaur Pawandeep Kaur 3 years, 1 month ago

Sorry period is 5 and group no. Is 9

Pawandeep Kaur Pawandeep Kaur 3 years, 1 month ago

Period 2nd and group no.is 15x

ANSWER

Why only 10% energy is transferred to the next trophic level?

Posted by Muskan Sharma 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Subhash Pandey 3 years, 1 month ago

Because 90% of the energy is used in life processes and some part is released in environment.

Devesh Anantharaj 3 years, 1 month ago

if producers have 10000J the primary consumer get 1000J because in 10000J of energy the producers use 90000J of energy balance 1000J of energy for next tropic level this is 10 % law

Mohammad Altamash 3 years, 1 month ago

Because about 90% energy is consumed while digestion and othe works

ANSWER

What is the difference between homozygous and heterozygous organisms?

Posted by Niharika Sharma 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Subhash Pandey 3 years, 1 month ago

Homozygous -Having complete set of alleles. Heterozygouw-Having incomplete set of alleles.

Muskan Sharma 3 years, 1 month ago

Homozygous contains either dominant or recessive trait but heterozygous contains both Dominant and recessive.

ANSWER

I CHANGED MY CAR HORN TO SOUND LIKE GUN SHOTS...... PEOPLE GET OUT OF THE WAY MUCH FASTER NOW

Posted by Âťťíťůđē Bøý 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Devesh Anantharaj 3 years, 1 month ago

IT cause noise pollution

ANSWER

what is balanced chemical equation and why it should be balanced ?

Posted by Account Deleted 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Pramod90000 Sharma 3 years, 1 month ago

In balanced chemical equation has an equal no of atoms of different in the reactants and products . The chemical equation should be balanced to obey the law of conservation of mass

Deepthika S 3 years, 1 month ago

A balanced chemical equation has an equal number of atoms of different elements in the reactants and products . The chemical equation should be balanced to obey the law of conservation of mass.

ANSWER

Why there is a graduation in the boiling point of alcohols

Posted by Aishu Aishwarya 3 years, 1 month ago

CBSE > Class 10 > Science

0 answers

ANSWER

Property of field line

Posted by Lucky Nigam 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Sneha Kadyan 3 years, 1 month ago

.)Arise from north pole and end at South pole .) Closed curves .) They do not intersect each other because if they intersect each other there are 2 direction of compass which is not possible

Muskan Sharma 3 years, 1 month ago

They move from North to South pole outside the magnet and South to North pole inside the magnet. They are always arranged in the form of closed concentric circles. No two field lines intersect each other. They are uniform and straight inside a magnet. They denser and stronger near the poles but weaker when wider apart.

Student Life 3 years, 1 month ago

Field lines never intersect each other. They are perpendicular to the surface charge. The field is strong when the lines are close together, and it is weak when the field lines move apart from each other. The number of field lines is directly proportional to the magnitude of the charge. The electric field line starts from the positive charge and ends from negative charge. If the charge is single, then they start or end at infinity.

ANSWER

Give a short revision on ch 4

Posted by Ankit Yadav 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Subhash Pandey 3 years, 1 month ago

Catenation - self linking property of an element to form log ,branched and ring.

Muskan Meena 3 years, 1 month ago

What is catenation and tretravalent

ANSWER

Which ions are responsible for making water hard?

Posted by Ankit Yadav 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Devesh Anantharaj 3 years, 1 month ago

iron is a good conducter

Student Life 3 years, 1 month ago

Magnesium and calcium ions.

ANSWER

What is difference in Alelle or gene

Posted by Roshni Singh 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Muskan Sharma 3 years, 1 month ago

The basic functional unit of heredity is called gene while the different forms of genes are called allele.

Subhash Pandey 3 years, 1 month ago

Allele - alternative form of gene having same position or locus of a chromosomes.always occur in pair. Have information of any traits Gene -Segment of DNA containing genetic information .

Gaurav Choudhary 3 years, 1 month ago

Genes are always in pair and the members of that pair is called allele

ANSWER

Define dominant traits and recessive traits

Posted by Nishant Aggarwal 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Subhash Pandey 3 years, 1 month ago

The traits which shows their influence in any type of allele. They are denoted with capital letters.

Utsav Kumar 3 years, 1 month ago

Dominant traits are in which they show their own character Recessive traits which are unable to show their characters

Priyanshu Pishu 3 years, 1 month ago

Dominant traits are in which they show their own character Recessive traits which are unable to show their characters

ANSWER

Can any metal displace potassium from a compound, say, KCl?

Posted by Manashree Bhide 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Sai Shekhar 3 years, 1 month ago

Rubidium(Rb)

Sai Shekhar 3 years, 1 month ago

Yes

ANSWER

What determines the rate of which energy is delivered by a current?

Posted by Tanishq Sukhraliya 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Subhash Pandey 3 years, 1 month ago

Resistance

Tanishq Sukhraliya 3 years, 1 month ago

Electric power

ANSWER

Women had undergone surgical method for preventing unwanted pregnancies. Does this protect her from getting sexually transmitted diseases. Write any other two contraceptive methods.

Posted by Mily Singh 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Devesh Anantharaj 3 years, 1 month ago

Yes the fallopain tube are blocked the egg is not produce so it prevent from un wanted pregnancies

Muskan Sharma 3 years, 1 month ago

Yes it can protect her from the transmission of STDs. Other contraceptive methods are Barrier method (cervical shield/cap, copper-T, loop, condom,etc.) and Hormonal method (contraceptive pills)

Subhash Pandey 3 years, 1 month ago

Yes

ANSWER

zig zag line on periodic table

Posted by Piyush Kine 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Devesh Anantharaj 3 years, 1 month ago

it separated metals from non metal

Megha Soni 3 years, 1 month ago

It separates metals from non metals.

Chowan Aarthi 3 years, 1 month ago

Zig Zag line in periodic table is know as metalloids

ANSWER

Draw all the ray diagrams for image formation in case of concave and convex mirror

Posted by Rajesh Kumar 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Rajesh Kumar 3 years, 1 month ago

Draw all the ray diagrams for image formation in case of concave and convex mirror

4Thank You

ANSWER

Taking the example of any food chain, prove that top consumer are ecologically the weakest.

Posted by Santosh Kunwar 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Muskan Sharma 3 years, 1 month ago

According to 10% law, only 10% of the energy entering a particular trophic level is available for transfer to the next higher trophic level, which means the first trophic level will have the highest concentration of energy and the last trophic level will have the lowest. For example, Solar energy (1000 J) → grass (100 J) → deer (10 J) → Lion (1 J). In this, at each trophic level 10% energy is decreasing and at last we can see that the lion (top consumer) have the lowest concentration of energy.