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The United Nations International Children's Emergency Fund (UNICEF) was created by the United Nations in 1946 to provide food, clothing, and healthcare to the children of post-World War II Europe. In 1953, UNICEF became a permanent part of the United Nations. While its name was shortened to United Nations Children Fund at that time, it is still is referred to as UNICEF.

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Sairaj Patil 6 years, 2 months ago

United Uations International Children's Emergency Fund

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A small electric lamp is placed at focus of a convex lens when the lamp is switched on the lens will produce

Posted by Anjana Thakur 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Abhishek Ahir 6 years, 2 months ago

Rays of small lamp rays passed through the lens after this ray parallels to principal axics

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What is skeleton equation???

Posted by Priyanshu Sharma 6 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Shalu Kumari 6 years, 2 months ago

Achemical equation expressed a symbol and formulae such that number of atoms of defferent element in reactant and product sides are unequal is called skeletal equation

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Tunni Kumari 6 years, 2 months ago

The unbalanced equation is called as skeleton equation

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? ... 6 years, 2 months ago

It is unbalanced equation.

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What is focus length

Posted by Priyanshi Rana 6 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Alok Ojha 6 years, 2 months ago

The distance between pole and focus on the principle axis is called focal length

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Tunni Kumari 6 years, 2 months ago

Distance between pole and the focus is called focal length

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? ... 6 years, 2 months ago

The distance between the pole and focus is called focal length

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Secret Girl...? 6 years, 2 months ago

Length *

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Secret Girl...? 6 years, 2 months ago

It's focal *lenth

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Full form of LUCK and AIDS

Posted by Bheemu Ani 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Aryan Chandra 6 years, 2 months ago

AIDS- Aquired Immuno Deficiency Syndrome

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Define electron ?

Posted by ? ... 6 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Alok Ojha 6 years, 2 months ago

Electron is an negatively charged particle which revolve around the nucleus in the atom

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Priyanshu Kumar ????? 6 years, 2 months ago

It is an elementary particle which has negative charge and it revolve around the nucleus ???

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Tunni Kumari 6 years, 2 months ago

Negatively charged particle of an atom

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Secret Girl...? 6 years, 2 months ago

Ryt aadya

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Aadya Singh ? 6 years, 2 months ago

It is a negatively charged particles...

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Who is the first person in the world

Posted by Mr . Naved Siddiqui 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Tunni Kumari 6 years, 2 months ago

Homosapiens

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Draw the isomers of butane , C4H10.

Posted by ❤ Suhani ❤ 6 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Alok Ojha 6 years, 2 months ago

Ch3-ch-ch3-ch3

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Aadya Singh ? 6 years, 2 months ago

2Thank You

❤ Suhani ❤ 6 years, 2 months ago

Its ok @ashish raushan....

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𝕽𝖆𝖚𝖘𝖍𝖆𝖓 委 6 years, 2 months ago

Not an idea about how to share the image Can have another way to recive the image or ans

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Bheemu Ani 6 years, 2 months ago

CH4-CH3-CH3-CH3

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Under what condition permanent electromagnet is obtained if a current carrying solenoid is used

Posted by Ankit Sharma 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 6 years, 1 month ago

The conditions required to obtain permanent electromagnet when a current carrying solenoid is used are:

● The rod inside solenoid should be made of a magnetic material like steel, soft iron etc. This type of material can retain the magnetic properties for a long time after magnetization.

● Direct current should be used for solenoid.

● The turns should be closely packed and large in number for producing a uniform strong magnetic field

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What is foxal length

Posted by News Tv 58 Prime 6 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Lucifer ? Morningstar? 6 years, 2 months ago

The length from the optical centre to focus is known as focal length.

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Diksha ? 6 years, 2 months ago

The distance between the focus (F) and pole( P) is called focal length...

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Write the name which is liquid at room temperature is non metal ?

Posted by Agrim Jain 6 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Diksha ? 6 years, 2 months ago

Bromine ( Br)

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Lucifer ? Morningstar? 6 years, 2 months ago

Bromine

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Character sketch of lomov

Posted by Mahima Yadav 6 years, 2 months ago

CBSE > Class 10 > Science

0 answers

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What do u mean by drift speed?

Posted by Lucifer ? Morningstar? 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Lucifer ? Morningstar? 5 years, 9 months ago

<font color=light pink> what's ur name

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How can we see the sun for few minutes even after it has actually rises.?

Posted by Lucifer ? Morningstar? 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Kandpal 6 years, 2 months ago

Due to atmospheric refrection

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ANSWER

Why are metal reducing agent where as non metal are oxidising agent

Posted by Deepanshu Gupta 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Bheemu Ani 6 years, 2 months ago

Because metals are electro positive means thy are electron dinners. Non metals are electro negative measurement thy are electron Esepters.

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Differentiate b/w oxygenated blood and deoxygenated blood.

Posted by . Ansari 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Lucifer ? Morningstar? 6 years, 2 months ago

The blood which carry oxygen is known as oxygenated blood. The blood which carry carbon dioxide is known as deoxygenated blood.

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Grand trunk road

Posted by Purnendu Pati 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

❤ Suhani ❤ 6 years, 2 months ago

Sher shah suri marg... Is also known as grand trunk road (gtr) The national highway no.1

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What is Speciation? 5 marks

Posted by Nainil Jariwala 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Lucifer ? Morningstar? 6 years, 2 months ago

Speciation, the formation of new and distinct species in the course of evolution. Speciation involves the splitting of a single evolutionary lineage into two or more genetically independent lineages

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What is the cromozon

Posted by Manmohan Yadav 6 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Niharika Sharma 6 years, 2 months ago

Chromosome are the thread like structures which contains information of our heridetary genes

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Yogita Ingle 6 years, 2 months ago

A chromosome is an organized structure of DNA and protein found in the nucleus of cells. It is a single piece of coiled DNA containing many genes. These are considered to be the vehicles of heredity as they carry genes. Genes are small points on the chromosome responsible for one character of an individual.

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Priyanshu Keshri 6 years, 2 months ago

It is a thread like structur inside the cell

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Aadya Singh ? 6 years, 2 months ago

Chromosome is a thread like structure in the nucleus of a cell formed of DNA which carries the genes...

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Which one of the following types of medicines is used for treating indigestion?

Posted by Vimlesh Kumari 6 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Diksha ? 6 years, 2 months ago

Antacids like milk of magnasia

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Yogita Ingle 6 years, 2 months ago

The indigestion is due to excess of acid produced in the stomach. The medicine used to neutralise it is called antacid

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Aadya Singh ? 6 years, 2 months ago

Antacids..

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Formula of resistivity

Posted by Rahul Sharma 6 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Nainil Jariwala 6 years, 2 months ago

Rho= Resistance.Area/Length

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Yogita Ingle 6 years, 2 months ago

Resistivity or specific resistance is resistance of a conducting material of unit length and having unit area of cross section. It is a property of material and depends on nature of material.
SI unit is Ohm-m (Ω.m)

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Aadya Singh ? 6 years, 2 months ago

Resistivity = Resistance× length/area..

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How to name an organic compound

Posted by Niyathi Shine 6 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Nainil Jariwala 6 years, 2 months ago

By nomenclature

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Rishabh Singh 6 years, 2 months ago

According to its no.of bonds and functional group and no. Of carbon on which the functional group has been used

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Yogita Ingle 6 years, 2 months ago

Prefix (alphabetically) root word (alk) primary suffix (ene, yne) secondary suffix (main functional group)

So IUPAC name of any organic compounds essentially consists of two or three parts.

(i) Root word (ii) Suffix (iii) Prefix

(i) Root Words

The basic unit is a series of root words which indicate linear or continuous chains of carbon atoms. Chains containing one to four carbon atoms are known by special root words while chains from C5 onwards are known by Greek number roots.

<div>

Chain Length	Root word	Chain Length	Root word
C1	Meth-	C11	Undec-
C2	Eth-	C12	Dodec-
C2	Prop-	C13	Tridec-
C4	But-	C14	Tetradec-
C5	Pent-	C15	Pentadec-
C6	Hex-	C16	Hexadec-
C7	Hept-	C20	Eicos-
C8	Oct-	C30	Triacont-
C9	Non-	C40	Tetracont-
C10	Dec-	C50	Pentacont-

</div>

In general, the root word for any carbon chain in alk-.

(ii) Primary Suffix

Primary suffix are added to the root words to show saturation or unsaturation in a carbon chain.

<div>

Nature of carbon chain	Primary suffix	Generic name
Saturated (C – C)	-ane	Alkane
Unsaturated (C = C) with one double bond	-ene	Alkene
Unsaturated (C º C) with one triple bond	-yne	Alkyne
Unsaturated with two C = C bonds	-diene	Akladiene
Unsaturated with two C º C bonds	-diyne	Alkadiyne
Unsaturated with three C = C bonds	-triene	Alkatriene

</div>

(iii) Secondary Suffixes

Suffixes added after the primary suffix to indicate the presence of a particular functional group in the carbon chain are known as secondary suffixes.

<div>

Functional Group	Secondary suffix
Alcohol (-OH)	-ol
Aldehyde (-CHO)	-al
Ketone (>CO)	-one-
Carboxylic acid (-COOH)	-oic acid
Sulphonic (-SO3H)	-sulphonic acid
Amine (-NH2)	-amine
Thioalcohol (-SH)	-thiol
Cyanide (-CN)	-nitrile
Ester (-COOR)	-oate
Amide (-CONH2)	-amide
Acid halide (-COX)	-oyl halide

</div>

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Difference between electrical energy and electric power

Posted by Rahul Sharma 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 6 years, 2 months ago

Sr.no	Energy	Power
1.	Energy is defined as the capacity to do some work. It is power which is integrated over time.	Power is defined as the rate at which a specific work is done, or which the energy is transmitted.
2.	The unit used to measure energy is joules or watt-seconds	The unit used to measure this is watt or joules per second
3.	‘W’ is the symbol which denotes energy	The symbol used to denote power is P.
4.	Energy changes from one form to another	Power cannot be transformed from one type to another
5.	Energy is a time quantity or component	It is an instantaneous quantity
6.	Various types of energy are kinetic, thermal, potential, gravitational, sound, electromagnetic, light, elastic, etc	Different kinds of power are electric power, optical power, human power, etc.
7.	Energy is known to be stored which can be used in future	Power quantity is not storable or cannot be stored