Question
What is the reason for twinkling of
stars?Solution
Seismometers are instrument that measures motion of the ground, including those of seismic waves generated by earthquakes, volcanic eruptions and other seismic sources. Records of seismic waves allow seismologists to map the interior of the earth and locate and measure the size of these different sources. Seismograph is another Greek term meaning to draw siesmo waves.
Addition of ethylene dibromide to petrolĀ
What is the process of changing a substance directly from solid to gas called ?
A nucleus X of mass number 238 undergoes 3 Ī±-decays and 2 Ī²ā»-decays successively. The mass number and atomic number of the resulting nucleus Y are:...
A fluid flows through a horizontal pipe. The pressure drops by 2000 Pa and speed increases from 2 m/s to 4 m/s. Find density.
What is the smallest unit of the kidney called?
Which period and group in the long form of periodic table contain maximum number of elements?
Galvanisation is the process of depositing a layer of ________ on iron.
You will see that the atomic radius decreases in moving from left to right along a period in the Periodic Table. The reason for this is-
Which planet is known as the Red Planet?
Which muscle type is involuntary and found in internal organs?
