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1
KCET 2024
MCQ (Single Correct Answer)
+1
-0

The incorrect statement about Hall -Heroult process is

A
carbon anode is oxidised to CO and $\mathrm{CO}_2$.
B
$\mathrm{Na}_3 \mathrm{AlF}_6$ helps to decrease the melting point of the electrolyte.
C
$\mathrm{CaF}_2$ helps to increase the conductivity of the electrolyte.
D
oxidation state of oxygen changes in the overall cell reaction.
2
KCET 2024
MCQ (Single Correct Answer)
+1
-0

Select the correct statement :

A
Roasting involves heating the ore in the absence of air.
B
Calcination involves heating the ore above its melting point.
C
Smelting involves heating the ore with suitable reducing agent and flux below its melting point.
D
Calcination of calcium carbonate is endothermic.
3
KCET 2023
MCQ (Single Correct Answer)
+1
-0

For the formation of which compound in Ellingham diagram $$\Delta G^{\circ}$$ becomes more and more negative with increase in temperature?

A
$$\mathrm{CO}$$
B
$$\mathrm{FeO}$$
C
$$\mathrm{ZnO}$$
D
$$\mathrm{Cu}_2 \mathrm{O}$$
4
KCET 2020
MCQ (Single Correct Answer)
+1
-0

Copper is extracted from copper pyrites by

A
thermal decomposition
B
reduction by coke
C
electrometallurgy
D
auto reduction
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KCET Subjects
Physics
Mechanics
Units & Measurement and Dimensions Vector Algebra Motion in a Straight Line Motion in a Plane Laws of Motion Circular Motion Work, Energy and Power Center of Mass and Collision Rotational Motion Gravitation Simple Harmonic Motion Fluid Mechanics Elasticity Waves Heat and Thermodynamics
Optics
Ray Optics Wave Optics
Electromagnetism
Electrostatics Current Electricity Capacitor Moving Charges and Magnetism Magnetism and Matter Electromagnetic Induction Alternating Current Electromagnetic Waves
Modern Physics
Atoms and Nuclei Dual Nature of Radiation Semiconductor Devices and Logic Gates Communication Systems
Chemistry
Physical Chemistry
Some Basic Concepts of Chemistry Atomic Structure States of Matter Thermodynamics Chemical Equilibrium Ionic Equilibrium Liquid Solution Redox Reactions Surface Chemistry Solid State Electrochemistry Chemical Kinetics Nuclear Chemistry
Inorganic Chemistry
Periodic Table and Periodicity Chemical Bonding and Molecular Structure Metallurgy Hydrogen and It's Compounds s-Block Elements p-Block Elements d and f Block Elements Coordination Compounds Salt Analysis Environmental Chemistry
Organic Chemistry
IUPAC Nomenclatures General Organic Chemistry Isomerism Hydrocarbons Haloalkanes and Haloarenes Alcohol, Phenols and Ethers Aldehyde and Ketone Carboxylic Acids and Its Derivatives Compounds Containing Nitrogen Polymers Biomolecules Chemistry in Everyday Life Practical Organic Chemistry
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Algebra
Logarithms Quadratic Equations Sequences and Series Permutations and Combinations Probability Sets and Relations Binomial Theorem Vector Algebra Three Dimensional Geometry Matrices and Determinants Statistics Mathematical Reasoning Linear Programming Complex Numbers
Trigonometry
Trigonometric Ratios & Identities Trigonometric Equations Inverse Trigonometric Functions Properties of Triangles
Calculus
Functions Limits, Continuity and Differentiability Differentiation Application of Derivatives Indefinite Integration Definite Integration Area Under The Curves Differential Equations
Coordinate Geometry
Straight Lines and Pair of Straight Lines Circle Parabola Ellipse Hyperbola
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