Mg + H2 → MgH2 When magnesium react with hydrogen it produce magnesium .....

In every society, there are some norms and customs relating to the intermediate variables as well as family size. Several sexual practices and marriage customs in society may be cited as examples in this connection. Many of these practices and .....

काखी च्याप्नु : नेताहरुले काखी च्यापेकै कारण टोले गुण्डाहरु सलाबलाईरहेका छन् ।  कानमा तेल .....

Here,  W have given,  a3 + 1/a3 = 198, & we need to find the value of a + 1/a. For this,  We know,      ( a + 1/a)3 = a3 + 3(a + 1/a) + 1/a3    [ Since, ( a + 1/a)3 = .....

Adaptational characteristics are the features that an organism need to survive (live) in its surrounding. For example; thorns of cactus - Thorns provide protection to the leaves of cactus and thus helps cactus to live in the hot and dry .....

- बाल अधिकारको संरक्षणका लागि बनेका कानुनको अप्रभावकारी कार्यन्वयन, - राज्य संयन्त्रको कमजोर .....

अन्तराष्ट्रिय श्रम सङ्गठन संयुक्त राष्ट्र सङ्घको विशिष्टीकृत निकाय हो । यो संस्था सबैखाले .....

Here, 49a4-11a2b2+ 25b4  = (7a2)2 +  2.7a2 .5b2 + (5b2) - 11a2b2 - 70a2b2 = (7a2 + 5b2)2 - 81a2b2   [ Since, using  a2+2ab+b2 = (a+b)2 .] = (7a2 + 5b2)2 - .....

Here, 25x4- 34x2y2+ 9y4  = (5x2)2 - 2.5x2 .3y2 + (3y2) - 34x2y2 + 30x2y2 = (5x2 - 3y2)2 - 4x2y2   [ Since, using  a2-2ab+b2 = (a-b)2 .] = (5x2 - 3y2)2 - (2xy)2 Now .....

Here,  x4/y4 +  1 + y4/x4   This can be written as, = (x2/y2)2 + 2.x2/y2 .y2/x2  +  (y2/x2 )2 - 1 = (x2/y2 + y2/x2)2 - (1)2    [ Since, using  a2+2ab+b2 = .....

81x4 + 4y4 = ( 9x2)2 + (2y2)2 which is in the form of (a2 + b2) = (a + b)2 - 2ab, So, ( 9x2)2 + (2y2)2 = ( 9x2 + 2y2)2 - 36x2y2. = ( 9x2 + 2y2)2 - 36x2y2  = ( 9x2 + 2y2)2 - .....

The scrotum is a part of the external male genitalia located behind and underneath the penis. It is the small, muscular sac that contains and protects the testicles, blood vessels, and part of the spermatic cord. The scrotum is divided internally .....

Here, 16x4/y4-17x2/y2+1 This can be written as, = (4x2/y2)2 - 2.4x2/y2 .1 + 12 - 9x2/y2  = (4x2/y2 - 1)2 - (3x/y)2    [ Since, using  a2-2ab+b2 = (a-b)2 .] Now use  a2 - .....

The SI unit of density is kg/m3. Density = mass / volume               = kg / .....

Social reform is a kind of social movement that aims to make gradual change, or change in certain aspects of society, rather than rapid or fundamental changes. A reform movement is distinguished from more radical social movements such as .....

1. isn't it? 2. isn't it? 3. was it? 4. isn't it? 5. aren't they? 6. won't it? 7. shall I? 8. will they? 9. shan't we? 10. didn't I? 11. was he? 12. won't she? 13. don't they? 14. doesn't he? 15. .....

.....

1. shall we? 2. will you? 3. shall we? 4. will you? 5. will you? 6. will you? 7. will .....

केही मुख्य बुँदाहरु :  हाम्रो वरिपरी रहेको हावा, पानी, जमिन र अन्य वस्तुलाई वातावारण .....

Here,  x4 - 6x2 + 1 This can be written as (x2)2 - 2 x2. 3 + 32 - 32 + 1 = (x2 - 3)2 - 8  [ Since, using  a2-2ab+b2 = (a-b)2 .] =  (x2 - 3)2 - (2√2)2 Now .....

Here, 9a4-19a2b2+25b4  = (3a2)2 + 2.3a2 .5b2 + (5b2) - 30a2b2 - 19a2b2 = (3a2 + 5b2)2 - 49a2b2   [ Since, using  a2+2ab+b2 = (a+b)2 .] = (3a2 + 5b2)2 - (7ab)2 Now .....

Here, 4x4 - 25x2 + 36 = (2x2)2 - 2.2x2.6 + 62 - x2 = (2x2 - 6)2 - x2  [ Since, using a2-2ab+b2 = (a-b)2 ] Now use a2 - b2 = (a + b)(a - b), and simplify to get .....

This is an example of a case where you are using an electrode which gets chemically involved in the reaction. At the cathode: If you electrolyse silver nitrate solution using silver as the anode, silver is deposited on whatever material the .....

Here,    a4-7a2+9 = (a2)2- 2.a2.3 + 32 - a2 = (a 2 - 3) - a2   [ Since, using a2-2ab+b2 = (a-b)2 .] Now use a2 - b2 = (a + b)(a - b), and arrange to get final .....

Here,    a4 + 64 = (a2)2 + 2a2.8 + 82 - 16a2  = (a2 + 8)2 - (4a)2    [ Since, using a2+2ab+b2 = (a+b)2 ] Now use a2 - b2 = (a + b)(a - b), and arrange to get .....

Here, 169x2-52x-56y-196y2 This can be written as = (13x)2- 2.13x.2 + 22 - 22 - 2.2.14y-(14y)2 = ( 13x - 2)2 - (2 + 14y)2    [ Since, using a2-2ab+b2 = (a-b)2 & a2+2ab+b2 = .....

Here, we need to factorize x4 - 6x2 - 7 - 8x - x2. This can be written as, =(x2)2 - 2 x2 .3 + (3)2 - 16 - 8x - x2 =(x2 - 3)2 - (x 2 + 2 x. 4 + 42)   [ Since, using a2-2ab+b2 = .....

Human migration is the movement by people from one place to another with the intentions of settling, permanently or temporarily in a new location. The human migrate from one location to the other due to various reasons. These reasons are called .....

= x2 - 10xy + 16y2 - z2 + 6yz = x2- 10xy + 25y2 - 9y2 - z2 + 6yz = (x)2 - 2.x.5y + (5y)2 - [ 9y2 - 6yz + z2 ] = ( x - 5y )2 - [ (3y)2 - 2.3y.z + (z)2] = ( x - 5y )2 - ( 3y - z )2 = ( x .....

साथी, यहाँ विपक्षबाट दिइएको छ । त्यसलाई पक्षमा मिलाएर लेख्नुहोस् है त । ‘धनभन्दा विद्या .....

In geography and cartography, the hemispheres of Earth refer to any division of the globe into two hemispheres. It is half of a symmetrical, approximately spherical object as divided by a plane of .....

Here, Total surface area of the hemisphere = 243π cm2 We know, Total surface area of the hemisphere = 3πr2 Then, 3πr2 = 243π 3r2 = 243 r2 = 81 r = 9 cm Again, Volume of the hemisphere = (2 ∕ 3)πr3 Place the .....

The Earth has an equatorial diameter of 12,756 km (7926 mi), and a polar diameter of 12713.6 km (7899.86 .....

An eye which does not form the image of an object lying between the near point and the far point on the retina is said to suffer from a defect of vision. When the ciliary muscles fail to contract and expand the lens properly or the eye balls get .....

It is possible for an individual to fulfill all the three duties at the given time. If the indivudual pays the tax to the government which is th civic duty, the government may function and formulate the laws. These laws help the individual to .....

Pacinian corpuscles are primary sensory .....

The taste buds are basiclly a small unit in the whole phenomena of taste.  It helps us to taste .....

Migration is the movement of a person or a group of people, to settle in another place, often across a political or administrative boundary. Migration can be temporal or permanent, and it may be voluntary or forced. Push factors are those that .....

Here, Length = l =10m Breadth = b =8m  Height = h = 4.5m Now,  Area of floor = Area of ceilling = l ⨯ b = 10m ⨯ 8m =.....Find it. Area of 4 walls = 2h( l + b) = 2 ⨯ 4.5m( 10m + 8m) =.......Find .....

Here, join B&E and D&C. Now, 1.∡ABD =∡CBD(x)      [ Given.] 2. ∡CBD = ∡BDE    [ ∡BDE = ∡ABD and from 1.] 3.∡CBE = ∡ EDC     [ Angle on the same arc .....

For the germination of a seed, the seed needs soil, moisture (water) and air. A closed tin can contains air but there is neither soil nor water.  Without these, germination is not possible. That is why a seed contained in a closed tin can .....

Let the marked price be x. Given, Discount percent = 20% VAT percent = 15% SP with VAT - SP = Rs 1800 Using formula, Discount amount = Discount % of MP                           .....

How can the selling price with VAT and selling price after discount be same. The question seems incomplete or .....

Flower is the (sexually) reproductive part of the plant.

Let marked price of the statue be x. Given, Discount percent on the statue = 20% VAT percent on the statue = 13% VAT amount = Rs 1872 Using formula, Discount amount on the statue = Discount % of MP               .....

Let the marked price of the cap be x. Given, Discount percent = 20% VAT percent = 13% VAT amount = Rs 83.20 Using formula, Discount amount = Discount % of MP                         .....

Rate of VAT is missing in your question. Please make it .....

A polypetalous flower is a flower in which the corolla consists of separate .....

= x2 - 4x - 21 + 10y - y2 = x2 - 4x + 4 - 25 + 10y - y2 = (x)2 - 2.x.2 + (2)2 - [ y2 - 10y + 25 ] = ( x - 2 )2 - [ (y)2 - 2.y.5 + (5)2 ] = ( x - 2 )2 - ( y - 5 )2 = ( x - 2 + y - 5 ) ( x - 2 - y + 5 ) = ( .....

= 4x2 - 4xy - 3y2 + 12yz - 9z2 = 4x2 - 4xy + y2 - 4y2 + 12yz - 9z2 = ( 2x )2 - 2.2x.y + ( y )2 - [ 4y2 - 12yz + 9z2 ] = ( 2x - y )2 - [ ( 2y )2 - 2.2y.3z + ( 3z )2 ] = ( 2x - y )2 - ( .....