Students and Teachers Forum
To prepare pure nitrogen in the laboratory, a mixture of ammonium chloride (NH4Cl) and sodium nitrite (NaNO2) is heated. The first product that is formed is ammonium nitrite (NH4NO2). This compound is very unstable, and breaks up .....
Here, U = {1, 2, 3, 4, 5, ........, 20} P = { x : x is a prime number}= {2, 3, 5, 7, 11, 13, 17, 19} Q = { y : y is a factor of 18} = {1, 2, 3, 6, 9, 18} R = { z : z is a multiple of 3} = {3, 6, 9, 12, 15, 18} Now, P ⋃ Q = {2, .....
By the question Load(L) = 1000N Effort (E)= 250 N Load arm(LD) = 25 cm Effort arm (ED)= ? By using formula Output work = Input work L ⨉ LD = E ⨉ ED ED = (1000 ⨉ 25) / 250 ED = 100 cm The effort arm is 100 .....
Here, x2 + 3 + x = 9 (Squaring both sides) or, x2 + x - 6 = 0 Compare above equation with quadratic equation , ax2 + bx + c = 0 And use, x =( -b ∓ √b2 - 4ac) / 2a to find the value .....
Here, T = (I*100)/PR or, T = (660*100)/(6000*6) Calculate you will get required .....
Here, Among these fraction 1/5,3/5,2/5 Greatest fraction is .....
Here, Take LCM = (y+1)2(y+2)2 {2(y+1)(y+2) + 1 - (y+2)2}/{(y+1)2(y+2)2} (y2+ 4y + 1)/{(y+1)2(y+2)2} Try .....
प्रश्नले के भन्न खोजेको हो साथी, मैले त बुझ्न सकिनँ त । बुझ्ने गरी लेख्नुहोस् न ल .....
Nepal as a secular state claims to treat all its citizens equally regardless of religion. It also claims to avoid preferential treatment for a citizen from a particular religion/nonreligion over other religions/nonreligion. In a secular state .....
Page layout is the term used to describe how each page of your document will appear when it is printed. In Word, page layout includes elements such as the margins, the number of columns, how headers and footers appear, and a host of other .....
The term loop means repetition of certain statements again and again. The looping statements execute a statement or a block of statements several times in the program based on the condition. The while statements continually execute a block of .....
Operators are the special symbols or words that are used to perform various operations on operands or constants or variables. The operator works between two or more than two values and gives the result. The function of the logical operator .....
The Pagoda Style: This style refers to multi-roofed structures with wide eaves supported by carved wooden struts. Windows, either latticed or grilled, are usually projecting. The roof is generally topped off by triangular spires enclosing an .....
Valency is used in chemistry to describe the potential an element or molecule has to bond. Valence number is the number of electrons in the outter shell of the atom. Similar to oxidation number and formal charge of an ion, the valency of .....
Here, i)6√3 is greater ii)5√2 is .....
Medium | Weight |
A | 15N |
B | 18N |
C | 16N |
b) What upthrust is exerted when the body is immersed in medium C?
c) Which one of the A and B has more density?
a) A medium is sea water, B is air and C is pure water b) Upthrust = weight in air- weight in water = 18 - .....
When a fire burns, it heats the surrounding atmosphere. It cause the air to expand and become less dense. The pull of gravity draws colder, denser air down to the base of the flame, and displace the hot air, Therefore, the burning fire .....
A desert is a place where the climate is very hot. It receives less rain and little water is found. It has sand. It frequently lose moisture through evaporation than they receive from annual precipitation .....
Here, Volume of ice block (v)=12m3 Density(d) =920 kg/m3 Now, Density = Mass / Volume or, Mass = Density ⨉ volume Mass = 920 ⨉ 12 Now, you can calculate the value of mass and its unit is .....
There are different I/NGOs running varieties of training sessions. These organizations propose programs on the basis of need and demand. They circulate the message to the concerned sector across the region and invite them. They are invited on .....
FNCCI stands for federation of Nepalese Chambers of Commerce and Industry. The objective of FNCCI are as follows: - to prouduce skilled vocational manpower for required fields - to generate trained and skilled manpoer for .....
We should not eat stale food because it will make us fell .....
A business that makes its facilities available to others for a feeis known as service providing agency. Merojob.com, Ali Baba, Amazon, etc. are some of the examples of servicie oriented .....
पानीमा मात्र पाइने,पानीमा मात्र बाँच्ने प्राणीलाई जलचर भनिन्छ । जस्तै माछा, गोही .....
The aquatic plants that float freely on water are called floating plants. The aquatic plants are ble to float on the water because they have light body and air-spaces throughout the bodies. The air-spaces trap air and help the leaves bounce back .....
मेरुदण्ड भनेको ढाड हो अर्थात शरीरको पछाडीको कुमदेखि कम्मर सम्मको लामो भाग नै मेरु .....
बच्चा जन्माउने र त्यसलाई दुध खुवाउने जन्तुलाई स्तनधारी भनिन्छ .....
मासु मात्र खाने हिंस्रक जन्तु मांसाहारी जन्तु हुन् । बाघ, भालु, चितुवा आदि जन्तु .....
सङग्राहलयमा विभिन्न खालका शाहाकारी र मांसाहारी जङ्गली जनावरहरूका अवशेषहरू, .....
Density Relative density 1. It is the mass per unit volume of a substance. 2.Its SI unit is kg/m3. 1. It is the ratio of the density of a substance to the density of pure water at 4ºC. 2. It has no unit .....
Birds have many bones that are hollow with criss-crossing struts or trusses for structural strength. The number of hollow bones varies among species, though large gliding and soaring birds tend to have the .....
1. Here, Let the density of the liquid be 'd' 'g' be the gravity The height of the liquid in drum A be 'h', then according to the question the height of the liquid on drum B is h/2 Let PA be the liquid .....