Consider the following statements which describe the properties of a particular metal1. It as a valuable metal of which the major ore is Wolfram.2. It is self hardening which it imparts to the steel when alloyed with the steel.3. Steel when alloyed with this metal, is used in manufacturing of ammunitions, armour plates, heavy guns etc.4. Its alloys are heat resistant, corrosion resistant and hardfacing.Choose the correct metal from the options

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Consider the following statements which describe the properties of a particular metal
1. It as a valuable metal of which the major ore is Wolfram.
2. It is self hardening which it imparts to the steel when alloyed with the steel.
3. Steel when alloyed with this metal, is used in manufacturing of ammunitions, armour plates, heavy guns etc.
4. Its alloys are heat resistant, corrosion resistant and hardfacing.
Choose the correct metal from the options

Tungsten

Chromium

Copper

Titanium

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Continental Drift theory by Wegener changed the perceptions about the Earth’s crust.
Consider the statements regarding this theory.
1) Sialic masses used to float over the Sima without any resistance being offered by Sima.
2) Earlier all land masses were united to form a massive landmass known as ‘Panthalasa’.
3) Ocean floors were considered to be stable and never moved.
Choose the correct statement/s from the following.

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