✍️ CRR Cash Reserve Ratio is the minimum fraction of total deposits of a bank’s customers that banks have to hold as reserves with the central bank. ✍️ SLR Statutory Liquidity Ratio is the ratio of liquid assets to the net demand and time liabilities. ✍️ LAF Liquid Adjustment Facility is a tool to allow banks to borrow money through repurchase agreements. It consists of repo and reverse repo operations. ✍️ MSF Marginal Standing Facility allows scheduled banks to borrow funds overnight from RBI against approved government securities. ✍️ MSS Market Stabilization Scheme is a monetary policy intervention by RBI to withdraw excess liquidity by selling government securities in the economy. ✍️ OMO Open Market Operations refers to the buying and selling of government securities in the open market so as to expand or contract the amount of money in the banking system. ✍️ REPO Repo...
Earth has a diameter of about 12756 km at equator & about 12715 km at the poles. The Earth’s interior consists of rocks & metals & has 4 layers.
1. The Crust or the top layer of the earth.
It sustains life on the earth. It is made of igneous rocks, metamorphic rocks & sedimentary rocks. The crust is made of 2 layers—
(1) outer layer orsial which is made of silica & aluminum
(2) inner layer or sima made of basalt & magnesium.
2. Mantle is the 2nd Layer of the earth made of silicate rocks rich in iron & magnesium. The mantle is divided into upper mantle and lower mantle.
Upper mantle consists of lithosphere & asthenosphere. Lithosphere is the hard rock layer of the mantle& the asthenosphere hemisphere is made of viscous yet solid rock.
Outer core – made of liquid iron & nickel.
Inner core- innermost & deepest Layers It is extremely hot with high pressure and this causes the contents of the inner core to remain solid.
Facts:-
The crust forms only 0.5 % of the volume of the Earth, 16% consists of the mantle & 83% makes up the core.
The radius of the Earth is 6371 km
Core is also called “nife” as it made of ni-nickle & fe-iron (ferrous)
The crust of the earth is made of various types of rocks (natural mass of mineral matter).
Rocks are of different colour, size, texture.
There are 3 major types of rocks
Igneous
Sedimentary
Metamorphic
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