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Zoology
Saurav Tharu
Lamarckism is the first theory of evolution, which was proposed by Jean Baptiste de Lamarck (1744-1829), a French biologist. Although the outline of the theory was brought to notice in 1801, his famous book “Philosophic Zoologique” was published in 1809, in which he discussed his theory in detail. LRead more
Periodic table
Nikhil Panjiyar
Lithium
Grammar
Nikhil Panjiyar
She used to got to temple on Dashain and Tihar.
Periodic table
Samikshya Thakuri
c) Lithium (Li) Lithium is the lightest metal with a density of 0.564 g⋅cm−3 and it is also the least dense solid element.
Biology
Sajana Thakuri
The mode of reproduction of bacteria is by 3 methods: By vegetative, By sexual and By asexual methods.
Physics
Sajana Thakuri
Here, Force (F) = 100 N Distance (d) =4 m Then, F1=Gmm/d^2 GMm=F1×d^2……..(1) When d=d/2 F2=GMm/(d/2)^2 =F1×d^2/(d/2)^2 =100×16/4 =1600/4 =400 N Therefore, the force of gravitation is 400 N when they are separated 2 m apart.
Free surface of a liquid behaves like
Sajana Thakuri
Its due to force of cohesion. Attractive force between molecules of same type is cohesive force and different types is adhesive force, the force between molecules causes the surface of liquid to contract to smallest possible area.
Chemistry
Sajana Thakuri
As one of the natural sciences, chemistry provides scientists with insight into other physical sciences and powerful analytical tools for engineering applications. The biological sciences and their offshoots, such as psychology, are rooted in biochemistry, and scientists are only now beginning to unRead more
Projectile(Mechanics)
Sajana Thakuri
Given, Horizontal velocity =300km/h =300×1000/(60×60) =83.33 m/s We know, t=(2h/g)1/2 =(2×800/10)1/2 =(160)1/2 t=12.64 seconds Next, The distance at which box will fall=horizontal velocity x time =83.33 x12.64 =1053.33 m
reasoning question
Sajana Thakuri
Without rotation, Earth will not have equatorial bulge and its radius will go to its average radius of 6,371 km. The simplest way to get this answer is to use the notion of centrifugal force. When a body rotates about the center of the Earth, the action of inertia shows up as if an apparent centrifuRead more
chemistry
Sajana Thakuri
The valency of an element is the number of hydrogen atoms that can combine with or replace (either directly or indirectly) one atom of the element. In other words, the valency of an element is the number of electrons an atom of the element uses to combine with atoms of other elements - it is the comRead more
Choose the correct one.
Sajana Thakuri
a) Some beggars may not be poor.
chemistry
Sajana Thakuri
Glass is super cooled liquid. It is hard due to the strong force of attraction between the atoms. The molecules in gas are falling down but we don’t observe it because it is very slow process. In case of old glass windows, we can see the base thicker due to this reason.
Chemistry
Sajana Thakuri
1. C 2. C 3. D 4. B
Entrance Exam
Sajana Thakuri
Increasing atomic mass
Mechanics(Hydro dyanamics)
Sajana Thakuri
Fluid speed would differ depending on exactly where inside the pipe you’re considering (generally slowest near the wall, fastest near the center) and whether the fluid is a gas or liquid (the former could be subject to significant changes in density under certain conditions). But as a general rule,Read more
English
Dillisha Dangol
The correct answer of this post is "about " . These day everybody complains about corruption in public life.
Forest in Nepal
Sajana Thakuri
Nepal is rich in forest resources. People therefore say that ‘green forests are the wealth of Nepal’. The forests of Nepal can be classified into these five parts – (1) sub-tropical evergreen, (2) Temperate Deciduous, (3) Temperate coniferous (4) Alpine vegetation and (5) Tundra vegetation. 1. Sub-tRead more
Machine
Dillisha Dangol
Given, Load (L) =800 N Effort applied (E) =600 N Length of inclined plane(l) = 5cm =0.05m Height of inclined plane(h) = 3cm=0.03m Mechanical Advantage (MA) = ? Velocity Ratio (VR) = ? Efficiency = ? We have, Mechanical Advantage = Load/Effort =800/600 =1.33 Now, Velocity Ratio = l/h = 0.05/0.03 =1.6Read more
Biology
Nikhil Panjiyar
Pedigree charts are diagrams that show the phenotypes and/or genotypes for a particular organism and its ancestors. ... These diagrams are used to determine the mode of inheritance of a particular disease or trait, and to predict the probability of its appearance among offspring.
Machine
Nikhil Panjiyar
Load (L) =800 N Effort (E) =600 N Length of inclined plane (l) = 5cm =0.05 m Height of inclined plane(h) = 3 cm = 0.03 m We have, MA= L/E =800/600 =1.33 Now, VR=l/h = 0.05/0.03 =1.67 Again, Efficiency = (MA/VR) ×100% =(1.33/1.67)×100% =79.64 %
Mechanics(Hydro dyanamics)
Samikshya Thakuri
An increase or decrease in flow rate will result in a corresponding increase or decrease in velocity. Smaller pipe causes a greater proportion of the liquid to be in contact with the pipe, which creates friction. Pipe size also affects velocity. Given a constant flow rate, decreasing pipe size increRead more
दिमाग खियाउनुहोस्
Sajana Thakuri
चार बाउ छोरा 1) हजुरबुबा - छोराको बुबा (1) 2) छोरा - हजुरबुबा का छोरा, नाति का बुबा (2) 3) नाती - (2)छोरा का (3)छोरा (1) यसरी 4 बाबु छोरा (3 व्यक्ति) मिलेर 3 स्याउ सिंगै खाए।
Tricky question
Sajana Thakuri
As the pronunciation for the Alphabetical letter"B" and The "Bee" is same. "B" makes the honey🐝🐝🍯
Tricky
Sajana Thakuri
Does he have insomnia at night? He can sleep at night😊