A hydrometer is an instrument for measuring the specific gravity of liquids. It generally consists of a small cylindrical glass tube with a lead-weight at its bottom. The hydrometer floats in an upright position. The top part of the hydrometer .....

According to Pascal’s principle, the force per unit area describes an external pressure which is transmitted through fluid and the formula is written .....

Relative density of a substance is the ratio of the density of substance to the density of water. i.e;   RD = density of a substance / density of .....

The upward force exerted by a liquid upon a body placed in it is called the buoyant force.  When a body is placed in water, Upthrust = V x d x g From the above formula we can say that the following are the factors that affect up .....

Mass is both a property of a physical body and a measure of its resistance to acceleration when a net force is applied. It also determines the strength of its mutual gravitational attraction to other bodies.  So, mass is there where there is .....

यसका बिशेषताहरुलाई निम्न बुदाहरुमा प्रष्ट पार्न सकिन्छ: - संघीय प्रणालीमा राज्यको शक्तिको .....

Here,  Length of diaginals of rhombus, d1 = a cm  & d2 = b cm. Thus, Area of rhombus = 1/2 ⨯ products of its diagonals                           .....

This formula is the formula of area of  isoscale triangular shape. Thus, the field is isoscale triangular .....

Here,  Sides of triangle are  a, b & c. So area = √[s(s -a)(s - b)(s - c)] unit square.                                      .....

Here, Side of  equilateral triangle = b units. So, Area of equilateral triangle = √3/4 ⨯ (side)2 = √3/4 ⨯ (b)2  unit .....

Here,  Initial population = 7200 Migrated in = 500 People died in earthquake = 200 So, Final population at the end of year = 7200 + 500 - 200                           .....

Here,  The required relation is  PT = P(1 + .....

Here,  The required relation is  PT = P( 1 + .....

Here, The required relation is P = A/( 1 + R/100)T          [ Since, A = P( 1 + .....

Here, P = Rs.5000 A = Rs.8500 CI = ? We know,  CI = A - P       = Rs.8500 - Rs. 5000      = Rs...............Find .....

Here, P = Rs.100 T = 1 year CI = Rs. 15 Rate = R = ? We know,  CI = P { ( 1 + R/100)T - 1} or, 15 = 100{( 1 + R/100)1 - 1} or, 15/100 = 1 + R/100 - 1 or, 15/100 = R/100 Simplify and find R = .....

Here, The required relation is  CI = P[ ( 1 + R/100)T - .....

Here, The required relation is  P = A/( 1 + R/100)T             [ Since, A= P( 1 + R/100)T  .....

Here,     Total no.of students = n(U) = 55     No.of students liked maths only = no(M) = 15     No.of students liked english only = no(E) = 18     No.of students did not liked any of them = n(MUE)' = .....

Here, n(U) = 30 no(M) = 10 no(T) = 5 n(MUT) ' = 13 n(T∩M) = x = ? Here, From the diagram, 5 + x + 10 + 13 = 30 Solve and find x. Which is your .....

Here,  Total No.of failed students = 30% of 230000 = 30/100 ⨯ 230000 = 69000. No.of students failed in Science only = no(S) = 30% of 69000 = 20700 No.of students failed in Maths only = no(M) = 25% of 69000 = 17250 No.of students .....

Here, n(U) = 112 n(B) = 64 n(T) = 60 n(BUT) = 100 n(T∩B) = ?  n(BUT)' = ? We know, n(BUT) = n(B) + n(T) - n(T∩B) or, 100 = 64 + 60 - n(T∩B) Solve and find n(T∩B). Again,  n(BUT)' = n(U) - .....

Here, n(U) = 130 n(T) = 70 n(C) = 40  n(TUC)' = 30 n(T∩C) = ? We know,  n(TUC) = n(U) - n(TUC)' = 130 - 30 = 100. Again,  n(TUC) = n(T) + n(C) - n(T∩C) or, 100 = 70 + 40 - n(T∩C) Solve and .....

Here, n(U) = 100% n(A) = 65% n(B) = 60% n(AUB)' = 15% n(A∩B)  = x = ? Here,  From the diagram: 65% - x + x + 60% - x + 15% = 100% Solve and find x, which is required .....

Here, given  Total no. of students [n(U)] = 200 = 100% students who like Dashain [n(D)] = 65% students who like Loshar[n(L)] = 45% students who like both Dashain and Loshar [n(D ∩ L)] = 20% students who like dashain like festivals other .....

Here, n(U) = 100% n(B) = 60% n(C) = 55% n(B∩C) = 35% n(BUC)' = ? Here,  n(BUC) = n(B) + n(C) - n(B∩C) = 60 + 55 - 35 = ....%    find it, Finally, n(BUC)' = n(U) - n(BUC)= ....% find it. Try to fill in .....

Given,  n(A) = 45 n(B) = 65 n(A∪B) = 85 n(A∩B) = ? no(A) = ? Now, n(A∪B) = n(A) + n(B) - n(A∩B) or, 85 = 45 + 65 - n(A∩B) ∴ n(A∩B) = 25 Again,  n(B) = no(B) +  n(A∩B) or, 65 .....

Given,  n(A) = 40 n(B) = 60 n(A∪B) = 80 n(A∩B) = ? no(A) = ? Now, n(A∪B) = n(A) + n(B) - n(A∩B) or, 80 = 40 + 60 - n(A∩B) ∴ n(A∩B) = 20 Again,  n(A) = no(A) +  n(A∩B) or, 40 .....

We have given, n(U) = 70, n(A) = 40, n(B) = 20 and n(AUB)' = 15. Now, (ii) n(A U B) = n(U) - n(AUB)' = 70 - 15 =  55 Again,   n(A U B) = n(A) + n(B) - n(A⋂B)   or, n(A⋂B)   = 40 + 20 - 55 .....

We have given, n(U) = 43, n(A) = 25, n(B) = 18 and n(A⋂B) = 7. Now, (ii) n(A U B) = n(A) + n(B) - n(A⋂B)                       = 25 + 18 - 7 = 36 Then,   n(A U .....

We have given, n(U) = 80, n(A) = 50, n(B) = 30 and n(A⋂B) = 10. Now, (ii) n(A U B) = n(A) + n(B) - n(A⋂B)                       =50 + 30- 10         .....

Here, Depth of water = h = 10m Density of water at 4oC = 1000kg/m3 Accleration due to gravity = g = 9.8m/s2 Pressure = ? We know, Pressure = P = hdg               = 10m ⨯ 1000kg/m3 ⨯ .....

Hydropower (from hydro meaning water) is energy that comes from the force of moving water. The fall and flow of water is part of a continuous natural cycle. Gravity drives the water, moving it from high ground to low ground. The force of moving .....

Energy saving is any behavior that results in the use of less energy. Turning the lights off when leaving the room and recycling aluminum cans are both ways of conserving .....

Potatoes contain chemicals that are soluble in water and  the chemicals may react with different metals.  If two different metals, which react with the chemicals of potatoes, are kept in potatoes, electricity is produced. The .....

Here, A shopkeeper uses a false balance of 950 g for 1 kg = 1000g, Hence, For 1 kg,  a customer will lose 1000g - 950g = 50 g So, For 12 kg,  a customer will lose 12 ⨉ 50 .....

We have, y-2√(y)+1=0 or, (√y)2 -2√y.1 + 12 = 0 or, (√y - 1)2 = 0 or, √y - 1 = 0 or, √y = 1 or, y = 12 So, y = .....

उत्तर : छठ =  तराई क्षेत्रमा मनाइने विशेष पर्व                             .....

उत्तर : पटुका  =  कम्मरमा बाँध्ने कपडा                         मट्याङ्ग्रो = .....

उत्तर : धिमे  =   नेवार जातिमा प्रचलित नाच वा बाजा                                 .....

Here,  ∡DBC = 45o       [ Diagonal of square bisects the vertex angle.] So, ∡DBP = 45o -  28o = 17o = ∡BPQ   [ BD//PQ and alternate angles.] ∡BPQ = ∡BRQ  = .....

उत्तर : क्षणिक   =   छोटो समयको                 संवाहक  =   खबर लाने व्यक्ति         .....

Religious heritage is our identity. It is a part of our unique culture. It helps to introduce us to the international forum. Religious heritage helps to develop the tourism industry in the country. Religious tourism helps to earn the foreign .....

उत्तर : त्राण =  सहारा                                 बाग =  बगैँचा             .....

कुण्ठा = दबिएको इच्छा                         आँटोपिठो = रूक्खासुक्खा खानेकुरा     .....

The Pashupatinath Temple is a famous and sacred Hindu temple complex that is located on the banks of the Bagmati River, approximately  5 kilometres north-east of Kathmandu in the eastern part of Kathmandu Valley, the capital of Nepal. The .....

याचकः माग्ने निर्भीकः निडर लघार्नुः धपाउनु तात्तातोः ताजा, .....

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वसन्त ॠतुमा  हरियाली पल्लव पलाउने र मगमग वनफूल फुलेर वातावरणा नै  मनोरम हुन्छ । यस समयमा .....

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