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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.

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Answer: In mathematics, nPr is the permutation of arrangement of ‘r’ objects from a set of ‘n’ objects, into an order or sequence. The formula to find permutation is: nPr = (n!) / (n-r)! Combination,...
Answer: In statistics, standard deviation (SD) is defined as the measure of change or dispersion of data from the actual mean. Whereas standard error of the mean (SEM) is the measure of variation of...
Answer: The real life examples of parallel lines are: Railway tracks Edges of a ruler Airport runways Parking spaces for cars Zebra crossings at traffic signals And more. Parallel lines do not...
Answer: In geometry, a ray is a part of a line that has a single endpoint and other end of the ray extends indefinitely. An angle is formed when two rays are joined together at their starting point,...
Answer: We cannot find the cross product of 4d vectors because cross product is a binary operation defined for two vectors in three-dimensional space. The cross product of any two vectors will result in...
Answer: The cross product of two vectors is a vector itself. When we find the cross product of two unit vectors, then the magnitude of the resultant vector is sine and hence always positive. But in the...
Answer: A matrix is evaluated by determining its absolute value using the determinant formula. The determinant of a 2x2 matrix is evaluated by cross multiplying the elements and then finding the...
Answer: Suppose, the principal amount deposited in the bank is Rs.1500 and we need to find the simple interest at the rate of 12% per annum, then; Simple interest = P x R x T/100 P = Rs.1500 R = 12%...
Answer: In chemistry, covalent bond is the strongest bond. In such bonding, each of two atoms shares electrons that binds them together. For example, water molecules are bonded together where both...
Answer: When a point is placed in three dimensional space, it is defined by three coordinates such as x-axis, y-axis and z-axis. Let the point P is the origin. Three directed lines passing through the...
Answer: The word differentiation is defined to find the derivative of a function. The process is called differentiation because we find the instantaneous rate of change of one quantity with respect to...
Answer: The units smaller than a second are: Milliseconds: 10-3 s Microseconds: 10-6 s Nanoseconds: 10-9 s Picoseconds: 1012 s Learn more here: Units of Time...
Answer: In trigonometry, we know that, Tan x = Sin x/Cos x Where x is any angle in a right triangle. Since, the tangent is the reciprocal of cotangent, therefore, Tan x = 1/cot x Hence, Cot x = Cos...
Answer: The formula to calculate the simple interest (SI) for given principal amount (P), interest rate (R) and time period in years (T) is given by: SI = PxRxT/100 Now to calculate the monthly simple...
Answer: The probability of an event to occur given the other event has already occurred, is called conditional probability. Suppose, event A has already occurred, then the probability of event B to occur...
Answer: If two vectors are perpendicular to each other, then their dot product is equal to zero. Suppose A and B are two vectors. Then, A.B = |A||B| cos 90 A.B = |A||B| (0) A.B = 0 Learn more here:...
Answer: In calculus, the properties of limits are: Learn here all the properties of limits in detail...
Answer: Engineers use angle measurements to construct buildings, bridges, houses, monuments, etc. Carpenters use angle measuring devices such as protractors, to make furniture like chairs, tables, beds,...
Answer: Sulfuric acid, nitric acid, hydrochloric acid, citric acid, and acetic acid are some of the most common acids that are found in business and research laboratories. Sulfuric acid is an acid which...
Answer: In geometry, two shapes or figures are congruent, if their corresponding dimensions are equal or same. For example, two triangles are congruent if they match either of these criteria. SSS: All...
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