**IISER Aptitude Test 2021 Question Paper** – Candidates who appeared for the IISER Aptitude Test on September 17, 2021, can download **IISER Aptitude Test Question Paper** from below. The test has been conducted in online mode (computer-based test) for candidates who are applying for admission to IISER through state & central boards channels (SCB). In the question paper for IISER Aptitude Test, candidates had to solve a total of 60 MCQ-type questions. Indian Institute of Science Education and Research (IISER) shall release the question paper and response sheet for the entrance exam online at iiseradmission.in. To download it, you will need to log in by entering their User ID and password. Candidates can use the IISER Aptitude Test question paper 2021 to cross-check their answers along with the answer key. Check more details on **IISER Aptitude Test 2021 Question Paper** from the page below.

**Latest:** IISER 2021 Memory-based question paper is now available. Candidates can check it from below.

## IISER Aptitude Test 2021 Question Paper

As per the analysis provided by the candidates, as compared to JEE Main & NEST exam, the paper was of ‘difficult’ level. For Physics, there were more of conceptual questions. Overall, the question paper was mostly from the class 12th syllabus, however, no direct questions were asked from NCERT. Candidates can check the memory-based question paper for IISER Aptitude Test 2021 from below.

**If you appeared for IISER Aptitude Test 2021, then you can send us the questions at [email protected] This will help us to add more questions to the page. **

**Ques. **F-P-Cl bond angle in PF3Cl2

**Ques. **What type of cells are found in the inner layer of the fallopian tube?

**Ques. **The floral formula of Fabaceae

**Ques. **What will be the main product when salicylaldehyde reacts with Ch3Mgbr followed by acidic hydrolysis?

**Ques. **Which would affect least for hardy Weinberg law

**Ques. **Where the electron density is maximum in the 1s shell of a hydrogen atom?

**Ques. **For f(x)=x^2|x|, x>1 f'(x) is differentiable f'(x) is differentiable but f”(x) is not f(x) is continuous but not differentiable

**Ques.** f(x)= 1+lnx, find the definite integration of f(cube root cosx)/f(cube root sinx)+ f(cube root cosx) from 0 to pi/2

**Ques.** A girl starts running from rest and accelerates for 2 seconds to a velocity of 9m/s. She runs at constant velocity for some time before de-accelerating to come to a halt. The total time from start to end is 12 seconds. Find the distance traveled by her.

**Ques.** A circuit diagram having XOR gate and AND gate with input values 1, P and 1, Q respectively are connected to a NAND gate, if the output value is 0, what are P and Q? (The formula for XOR gate was given)

**Ques.** Area under curve y=1+|sinx|, y=-|sinx|, x=2pi and x=0 is?

**Ques.** The dimensions of electrical resistance are equal to which of the following quantity? a) h/e b)e/h c)(e)^2/(h) d)(h)^2/(e)

**Ques.** 4 charges q, -2q, -3q, and 4q are kept at the vertices of a regular tetrahedron. A charge of 5q is kept at the center of the tetrahedron. Find the total electrostatic potential energy of the system Opt1 15q²/4πεl Opt2 -15q²/4πεl Opt3 30q2/4πεl

**Ques.** Draw energy profile diagram of following sequential reaction P—–>q—->r Kf of reaction 1 =4k kb of reaction1 = 2k Kf of reaction 2 =8k kb of reaction1 = 3k

**Ques.** In F3PCl2, the bond angle of F-P-Cl

**Ques.** Let Set A be A={1,2,3,4,5} Find no. Of functions f from A–>A such that f(f(x))=x Opt 1 – 5, Opt 2 – 10, Opt 3 – 31, Opt 4 – 41

**Ques.**Which of the following is not asexual reproduction.

1. Conidia of ascomycetes

2. Zoospores of Chlamydomonas

3. Isogametes of chordophones.

**Ques.** The half-life of nuclei is 2000 hrs, total time required for decaying of 2/3 nuclei

**Ques.** Let to sets be S1= {1,2,4,6,8,9,11,12} S2={51,52,54,56,58,59,61,62} M1 M2 be arithmetic mean of data 1 and 2 and v1 and V2 be variance of both data respectively Find relationship between M1 and M2 and v1 and V2

**Ques.** What is a common function between the small intestine and renal tubule?

**Ques.** There are 1 to 10 numbered cards in a bag if A picks any card at random( keeps it in the bag) and the card shows m. Also if B picks any card at random and (keeps in the bag) and the card shows n, then what is the probability that m>n gave that m is an even number.

**Ques.** Which of the following is associated with asexual reproduction? Ans- Gemmule in sponges

**Ques.** Which is an example of a palindromic DNA sequence

**Ques.** If f(x)= e^x2/2+ int (0 to x) tdt then find the range of the function f(x)

**Ques.** NiCO4 is diamagnetic due to Ans- absence of unpaired electrons

**Ques.** What type of epithelial cells are found in the inner lining of the fallopian tube?

**Ques. **y = x^{2} * |x|

**Ques. **z^{2} + 2ze^{(a-ea)} + e^{a-ea} = 0

**Ques.** In Al2Cl6 how do bond lengths of aluminum with terminal chloride and aluminum with bonded chloride vary? and how does the bond angle of aluminum with terminal chloride vary from that of bonded chloride?

**Ques.** A particle with velocity= v k^ is traveling in magnetic field B= Bx i^ +By j^ and electric field E= Ex i^+ Ey j^. Then Ex and Ey in terms of v, Bx, and By are?

**Ques. **y = -|sin(x)| & y = 1+ |sin (x)| Area between x = 0 & x = 2π

**Ques. **f(x) = ln (1+x), x≥0

**Ques. **In a pack, there are 10 cards. A boy picks one of the ten cards, he will see the number and will again put it back. Then, a girl comes and picks the card. Find the probability that the score on the boy’s card is greater than that of the girls given that the score the bo got is even.

**Ques.** y = cos^{4}(x) + sin^{2}(x) + cos(x). What is the maximum value of y?

### What is IISER Aptitude Test 2021 Memory-Based Question Paper?

Since the IISER aptitude test is conducted in online mode, hence candidates do not have the question paper to carry home. The memory-based question paper for IISER 2021 exam is provided by the students who appeared for the entrance exam. Various coaching institutes also release the memory-based question paper and solutions for the same. Until the conducting body releases the question paper online, candidates can use the memory-based paper to cross-check their answers.

### How to Download IISER 2021 Question Paper?

Indian Institute of Science Education and Research (IISER) shall release the question paper for the aptitude test in online mode. Candidates can download it by following the instructions given below.

**1st Step:** Click on the direct link on the page above to download the question paper.

**2nd Step:** After this, candidates shall need to log in by entering their user id and password.

**3rd Step:** Submit the login details.

**4th Step:** On submitting the login details, candidates will find their question paper.

**5th Step:** Lastly, candidates can download and take a printout of the paper pdf for future reference.

### IISER Aptitude Test 2021 Answer Key

Along with the question paper, candidates will also get their IIST Aptitude Test 2021 Answer Key. Aspirants can use both these documents to start cross-checking their answers and then can calculate their probable score. IISER entrance exam answer keys contain correct answers to the questions asked in the entrance test. It can be used by the candidate to know their tentative score till IISER Aptitude Test 2021 Result is announced.

In case of any discrepancy in the option as marked in the provisional answer key, candidates can raise an objection(s) to the exam authorities in the prescribed format. If the objection as submitted by the candidate is found to be correct, then a final answer key for IISER entrance exam 2021 is released with the necessary modifications.

## FAQs for IISER Aptitude Test 2021 Question Paper

**Ques. What type of questions are asked in IISER aptitude test?**

**Ans.** There are multiple-choice type questions are asked in the entrance exam, in which you will get 4 options, and you need to select the correct option. There are a total of 60 questions asked in the test. The paper is divided into sections – Physics, Chemistry, Biology, Mathematics.

**Ques. Is IISER aptitude test 2021 easy?**

**Ans.** As per the review given by the candidates who appeared for the aptitude test in 2021, the exam was in more difficulty level, in comparison to JEE Main & NEST exam. In order to score good marks in the exam, candidates must complete their class 12th NCERT syllabus. This year, students said that most of the questions were of advanced level and there were very few direct questions.

**Ques. From where can I download IISER Question Paper 2021?**

**Ans. **Since, IISER Aptitude Test is a computer-based test, candidates can download their question paper & response sheet online from the official website, iiseradmission.in.

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