JEE Main 2023 (Online) 29th January Evening Shift | Environmental Chemistry Question 17 | Chemistry

The concentration of dissolved Oxygen in water for growth of fish should be more than $$\mathrm{\underline X }$$ ppm and Biochemical Oxygen Demand in clean water should be less than $$\mathrm{\underline Y }$$ ppm. X and Y in ppm are, respectively.

$$\mathrm{X}$$	$$\mathrm{Y}$$
4	15

$$\mathrm{X}$$	$$\mathrm{Y}$$
4	8

$$\mathrm{X}$$	$$\mathrm{Y}$$
6	12

$$\mathrm{X}$$	$$\mathrm{Y}$$
6	5

JEE Main 2023 (Online) 29th January Morning Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Correct statement about smog is :

NO$$_2$$ is present in classical smog

Both NO$$_2$$ and SO$$_2$$ are present in classical smog

Photochemical smog has high concentration of oxidizing agents

Classical smog also has high concentration of oxidizing agents

JEE Main 2023 (Online) 25th January Morning Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Some reactions of NO$$_2$$ relevant to photochemical smog formation are

JEE Main 2023 (Online) 25th January Morning Shift Chemistry - Environmental Chemistry Question 14 English

Identify A, B, X and Y :

$$\mathrm{X = [O],Y = NO,A = {O_2},B = {O_3}}$$

$$\mathrm{X = {N_2}O,Y = [O],A = {O_3},B = NO}$$

$$\mathrm{X = {1 \over 2}{O_2},Y = N{O_2},A = {O_3},B = {O_2}}$$

$$\mathrm{X = NO,Y = [O],A = {O_2},B = {N_2}{O_3}}$$

JEE Main 2023 (Online) 24th January Evening Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Correct statement is :

An average human being consumes more food than air

An average human being consumes 100 times more air than food

An average human being consumes nearly 15 times more air than food

An average human being consumes equal amount of food and air

PREVIOUS NEXT

Questions Asked from Environmental Chemistry (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

JEE Main Subjects

Physics

Mechanics

Units & Measurements Vector Algebra Motion in a Straight Line Motion in a Plane Circular Motion Laws of Motion Work Power & Energy Center of Mass and Collision Rotational Motion Properties of Matter Heat and Thermodynamics Simple Harmonic Motion Waves Gravitation

Electricity

Electrostatics Current Electricity Capacitor Magnetic Effect of Current Magnetic Properties of Matter Electromagnetic Induction Alternating Current Electromagnetic Waves

Optics

Geometrical Optics Wave Optics

Modern Physics

Atoms and Nuclei Dual Nature of Radiation Semiconductor Communication Systems

Chemistry

Physical Chemistry

Some Basic Concepts of Chemistry Structure of Atom Redox Reactions Gaseous State Chemical Equilibrium Ionic Equilibrium Solutions Thermodynamics Electrochemistry Chemical Kinetics and Nuclear Chemistry Solid State Surface Chemistry

Inorganic Chemistry

Periodic Table & Periodicity Chemical Bonding & Molecular Structure Isolation of Elements Hydrogen s-Block Elements p-Block Elements d and f Block Elements Coordination Compounds Salt Analysis Environmental Chemistry

Organic Chemistry

Basics of Organic Chemistry Hydrocarbons Haloalkanes and Haloarenes Alcohols, Phenols and Ethers Aldehydes, Ketones and Carboxylic Acids Compounds Containing Nitrogen Polymers Biomolecules Chemistry in Everyday Life Practical Organic Chemistry

Mathematics

Algebra

Sets and Relations Logarithm Quadratic Equation and Inequalities Sequences and Series Mathematical Induction Binomial Theorem Matrices and Determinants Permutations and Combinations Probability Vector Algebra 3D Geometry Complex Numbers Statistics Mathematical Reasoning

Trigonometry

Trigonometric Ratio and Identites Trigonometric Equations Inverse Trigonometric Functions Properties of Triangle Height and Distance

Coordinate Geometry

Straight Lines and Pair of Straight Lines Circle Parabola Ellipse Hyperbola

Calculus

Functions Limits, Continuity and Differentiability Differentiation Application of Derivatives Indefinite Integrals Definite Integration Area Under The Curves Differential Equations