Get Answers for All Your JEE Questions

JEE Questions

Welcome to the BYJU’S JEE questions and answers page! Students and aspirants can access a huge library of questions covering all the important topics that are included in the JEE syllabus. The questions and answers have been prepared by a group of experienced subject matter experts. Students will find questions framed from Physics, Maths and Chemistry subjects.

The JEE questions and answers discussed here will give a much clearer idea of many JEE topics such as gravitation, thermodynamics, atomic structure, chemical bonding, binomial theorem, quadratic equation, etc. The questions have further been answered in an informative and easy to understand manner.

Alternatively, the questions are very important from an examination point of view and can help in quick revision of the different topics. Additionally, students can also clear their doubts and confusion by referring to these questions regarding any concept or topic. Students will find questions that are both conceptual and descriptive including definitions, principles, formulas, examples of, properties of, and types.

Featured Videos

How to draw a graph of Quadratic Polynomial

Newton's Second Law of Motion

Energy Change in Bond Formation

Free Body Diagram

All your doubts will be answered

Book a Free Class
Answer: |z - 3 - 2i | ≤ 2 |2z - 6 + 5i| = 2|z - 3 + (5/2)i| |z - 3 + (5/2)i| =|z - 3 -2i+2i+(5/2)i| (using triangle inequality) = |(z - 3 -2i)+(9/2)i| ≥ ||z - 3 -2i)|-(9/2)| ≥ |2-9/2|≥...
Answer: Given z2 + az + b= 0, z1+z2 = -a (sum of roots) z1z2 = b (product of roots) z2 = z1(cos π/3 + i sin π/3) = z1(½ +i√3/2) 2z2-z1 = i√3z1 (2z2-z1 )2 = -3z12 z12+z22 =...
Answer: Given Take z = x+iy (x+iy)(x-iy)(x-iy)2+(x+iy)2 = 350 (x2+y2)(2x2-2y2) = 350 (x2+y2)(x2-y2) = 175 = (25)*7 x2+y2 = 25 (i) x2-y2 = 7 ..(ii) Adding (i) and (ii), we get 2x2 = 32 x = ±4...
Answer: Given P is the point in the argand diagram corresponding to the complex number √3 + i  P is √3 + i 2(cos π/6 + i sin π/6) Q1 is 2 (cos (π/2 + π/6)+ i sin(π/2 +...
Answer: Take z = x+iy |z| = √(x2+y2) Given |(z+i)/(z-i)| = √3 |(z+i) | = √3|(z-i)| Put z = x+iy |(x+(y+1)i) | = √3|(x+(y-1)i)| Squaring we get x2+(y+1)2 = 3(x2+(y-1)2)...
Answer: In the pharmaceutical industry, amines are mainly used. Morphine and Demerol are used as pain-killing analgesics. Novocaine is used as an anaesthetic and a very popular decongestant is Ephedra...
Answer: Use ω3 = 1 and 1+ω = -ω2  (1+ ω - ω2)7 = (-ω2-ω2)7 = (-2ω2)7 = -27ω14 = -128 ω2 Hence option (4) is the answer...
Answer: Phenols have distinguishing properties and are not categorised as spirits. Due to the close coupling of the aromatic ring with the oxygen and a very weak bond between the oxygen and hydrogen,...
Answer: (3+ω+3ω2)4 = (2+1+ω+ω2+2ω2)4 = (2+0+2ω2)4 = [2(1+ω2)]4 = [2(-ω)]4 = 24 ω = 16ω Hence option (3) is the answer...
Answer: A system is in dynamical equilibrium at equilibrium. At the same time, both the forward and backward responses exist. If the difference in Gibbs energy for the forward reaction is G, so the...
Answer: We know 1+ω+ω2= 0 So ω2 = -(1+ω) |a + bω + cω2| = |a+bω +c(-(1+ω )) | = |(a-c)+(b-c) | greater than or equal to |(a-c)+(b-c)ω2 | (If...
Answer: The primary difference between gypsum and Plaster of Paris is that calcium sulphate dihydrate is found in the gypsum, whereas calcium sulphate hemihydrates are contained in the Plaster of Paris...
Answer: Given z = (7-i)/(3-4i) Multiply numerator and denominator with (3+4i)  (7-i)(3+4i)/(3-4i)(3+4i) = (21-3i+28i+4)/(9+16) = (25+25i)/25 = 1+i z14 = (1+i)14 = ((1+i)2)7 = (1+2i-1)7 =...
Answer: The mass of the formula unit of a substance is the sum of the atomic masses of all atoms in an ionic compound's formula unit. A formula unit in chemistry is the analytical formula used as a...
Answer: ω(1+ ω)3- (1+ω)2 = ω((-ω2)3-(-ω2)2) = ω(-1-ω) = ωω2 = ω3 = 1 Hence option (1) is the answer...
Answer: Given x = α + β, y = αω + βω2, z = aω2 +βω xyz = (α + β)(αω + βω2) (αω2 +βω)  =...
Answer: 1/2 + i √3/2 = cos π/3+i sin π/3 = eiπ/3 = cis(π/3) Fourth root = eiπ/12 = cis(π/12) Hence option (1) is the answer...
Answer: Vernier caliper is an amazing instrument used for measuring lengths. The reading on a vernier caliper is more accurate than a normal ruler. This instrument can be used to measure depth, inner...
Answer: Why ac is dangerous than dc?. Alternating current (A.C) is five times more dangerous than Direct current (D.C). The frequency of the alternating current is the main reason for this severe effect...
Answer: Why are pole pieces of galvanometer made concave? The pole pieces of the galvanometer are made concave so that the current-carrying coil and the magnetic field are always perpendicular to each...
Testimonials

Shikhar Mundra | AIR 20 - JEE Advanced 2020 |

The BYJU'S App was the first place I would go to, whenever I had any doubts in any concept. It was an integral part of my JEE preparation. The daily practice problems helped me revise and strengthen my concepts along with increasing my speed and accuracy.

Kunal Kundwani | AIR 63 - JEE Advanced 2020 |

The videos on the BYJU'S App aided in improving my weak areas in Chemistry. It was helpful in my preparation and I got to learn concepts in a different way. Practicing the mock tests and the AITS, along with the extensive analysis helped me identify my weak and strong areas.

Ask
Question