Which of the following dimensions are co...

Which of the following dimensions are correctly matched? `(theta = "temperature")`

Angular momentum `-[M^(1)L^(2)T^(-1)]`

Torque `-[M^(1)L^(2)T^(-2)]`

Stefan's constant `-[M^(1)T^(-3)theta^(-4)]`

Planck's constant `-[M^(1)L^(2)T^(-2)]`

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The correct Answer is:

A, B, C

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Which of the following is / are correctly matched ?

`{:("Column-I(Metals)","Calumn-II(Process used for extraction)"),("Titanium","Kroll process"):}`

`{:("Column-I(Metals)","Calumn-II(Process used for extraction)"),("Aluminium","Baeyer process"):}`

`{:("Column-I(Metals)","Calumn-II(Process used for extraction)"),("Chromium","Thermite process"):}`

`{:("Column-I(Metals)","Calumn-II(Process used for extraction)"),("Silver","Mac-Arthur cyanide process"):}`

Age pyramid - Biome

Aerenchyma - Opuntia

Stratification - Population

Parthenium hysterophorus - Threat to biodiversity

`[Al(OH)_4]^(-)(aq)+NH_4^(+)(aq)overset("Slightly heat")to` White precipitate and liberation of ammonia

`Pb^(2+)(aq)+2Br^(-)(aq)to`red precipitate

`BiI_3`(black precipitate)+`H_2O(l)overset(Delta)`Orange precipitate

`Cu^(2+)(aq)+K_4[Fe(CN)_6](aq)to` White precipitate