**IISER Aptitude Test 2021 Answer Key** – The official answer key for IISER Aptitude Test for SCB Channel is now available. Candidates can raise objections against the answer key of IAT 2021 for SCB Channel from 25 to 28 September 2021 (11:55 PM). IISER Aptitude Test was conducted on** September 17, 2021**. Indian Institute of Science Education and Research (IISER) also releases the answer key. It can be downloaded from iiseradmission.in. Firstly, the provisional answer key is released and then, the final answer key is released. The candidates can calculate the scores using the answer key. To calculate the scores, add 03 marks for each correct response and deduct 01 marks for each wrong response. Know more about **IISER Aptitude Test 2021 answer key **from this page.

## IISER Aptitude Test 2021 Answer Key

**Direct Link to Check Answer Key: Click here** **to view and evaluated answer key for IAT 2021 SCB Channel.****Raise Objections: Click here to submit the objections against the answer key for IAT 2021 SCB Channel.**

### IISER Aptitude Test 2021 Answer Key

Check the important dates for IAT 2021 answer key from below.

IISER Aptitude Test 2021 Answer Key | Dates |
---|---|

Exam date | 17 Sep 2021 |

Availability of memory-based answer key | Released |

Availability of official answer key for IAT 2021 (SCB Channel) | 20 – 28 September 2021 |

Raise objections (if any) for IAT 2021, SCB Channel | 25 – 28 September 2021 (11:55 PM) |

Release of the final answer key | to be announced |

### Steps to Calculate Marks Using IISER Aptitude Test 2021 Answer Key

With the help of IISER Aptitude Test 2021 answer key, the candidates can calculate their marks and can get an idea about the probable score. Check the steps given below to calculate the marks using the answer key.

**1st step:** First of all, download the answer key or check the questions and answers given above on this page.

**2nd step: **Now, open the question paper.

**3rd step:** Then, use the marking scheme given below to calculate the marks.

- Add 03 marks for each correct response
- Deduct 01 marks for each wrong response
- 0 marks will be given for no response

*The score thus obtained will be your probable score. *

### How to Download IISER Aptitude Test 2021 Answer Key?

According to the previous years details available, the answer key is released at the candidate’s login. The answer key contains the answers for every subject; Physics, Chemistry, Biology and Mathematics. To download it, the candidates can follow the steps given below.

**1st step: **Go to the official website, iiseradmission.in.

**2nd step:** Then, click on the ‘answer key’ link.

**3rd step: **Next, enter the login credentials such as user id and password.

**4th step: **After entering details, click on the ‘login’ button.

**5th step: **Then, from the dashboard, download the answer key.

*This is how IISER Aptitude Test answer key will look like*

### Types of IISER Aptitude Test 2021 Answer Key

There are 3 types of answer keys that are released after the conduct of IISER Aptitude Test 2021. The details are as follows:

**Memory-based answer key: **The coaching institutes release the memory-based answer keys for IISER Aptitude Test. These are prepared according to the student’s input about the exam. The memory-based answer keys are released few hours after the exam.

**Official answer key:** Indian Institute of Science Education and Research (IISER) releases the answer key some days after the exam. The candidates can download it from iiseradmission.in. The candidates can get a firm about their scores with the help of the official answer key. This answer key can be challenged, if there are any errors in it.

**Final answer key:** The official authority releases the final answer key after going through the objections. After the release of the final answer key, no objections are accepted by the official authority.

### Challenging IISER Aptitude Test 2021 Answer Key

After the release of the answer keys, the candidates are given a chance to submit their objections against the answer key, if they find any error in it. The objections have to be submitted online only. Once the objections are submitted, the objections are cross-checked and then, the final answer key is released at iiseradmission.in.

### IISER Aptitude Test 2021 Exam Pattern

Check the exam pattern of IAT 2021 from below.

- IISER Aptitude Test is a computer-based exam.
- In the test, there are multiple-choice questions.
- The duration of the test is 180 minutes.
- There are total 60 questions in the test.
- The questions in the test are asked from Physics, Chemistry, Mathematics and Biology.

**Distribution of questions**

Subjects | No. of questions |
---|---|

Biology | 15 |

Chemistry | 15 |

Mathematics | 15 |

Physics | 15 |

### IISER Aptitude Test 2021 Result

The candidates can check IISER Aptitude Test 2021 result from iiseradmission.in. The result is announced for KVPY / SCB / JEE channels. The result contains the roll number of all the candidates who qualify the entrance test. After the declaration of the results, all the qualified candidates need to take part in the counselling.

### IISER Aptitude Test 2021 Memory Based Answer Key

**Ques. **f(x) = ln (1+x), x > 0**Ans.** I = π/4

**Ques. **A boy picks a card.: (1, 2, 3, …., 10) and the number boy gets was m. Then, a girl picks a card and the number she gets is n. What will be the probability (m>n / m is even). **Ans. **1/4

**Ques.** There were 2 sets; A (0,1,2,4,8,9…) and B (50,5,52,54,58,59). What is the relation between the variants of A and B and the means of A and B? **Ans.** Variants of B is equal to Variants of A, but the mean of B is 50 + Mean of A.

**Ques.** f(x) = max {n x (1-|x – (2n+1)}, where n could take the value 1,2,3…20. **Ans.** 210 sq. units

**Ques. **y=x^{2} x |x|. Whether the derivatives are continuous or not?**Ans.** y and y’ were continuous. This means, that the first derivative and second derivative are continuous. The second derivative is not differentiable.

**Ques. **y = 1|sin(x)| and y = 1+ |sin (x)|. Find the difference between x=o and x=2π**Ans. **

**Ques.** y=cos 4 (x) + sin^{2} (x) + cos (x). What is the maximum value of this function?**Ans.** ymax < zmax = 2

**Ques. **NiCo4 is diagmagnetic due to**Ans.** Absence of unpaired electrons

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

**Other questions that were present in the exam are:**

**Ques. **F-P-C-I bond angle in PF3Cl2

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

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

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

**Ques. **The floral formula of Fabaceae

**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 travelled by her.

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

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

**Ques. **In Al2Cl6, how does bond lengths of aluminium with terminal chloride and aluminium bonded chloride vary? And how does the bond angle of aluminium with terminal chloride vary that of the bonded chloride?

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

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

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

**Ques. **Draw energy profile diagram of the following sequential reaction P…..>>Q….>>R Kf of reaction 1=4k kb of reaction 1=2kf of reaction 2=8 k kb of reaction of 1=3k

**Ques. **Which of the following is not asexual reproduction of Conidia of ascomycetes Zoosperes of Chlamydomonas Isogametes of Chrodophones.

**Ques.** A particle with velocity = vk^ is travelling in a magnetic field B=b x i^ + By j^ and electric field E=Ex i^ + Ey j^. The ex and ey in terms of v, Bx, By are?

## FAQs on IISER Aptitude Test 2021 Result

**Ques. From where can I download the official answer key of IISER Aptitude Test 2021?**

Ans. You can download the official answer key from iiseradmission.in.

**Ques. Does IISER release the answer key for IAT?**

Ans. Yes, IISER releases the answer key for IAT.

**Ques. Who prepares the memory-based answer keys?**

Ans. The memory-based answer keys are prepared by the coaching institutes.

**Ques. How to calculate scores using the answer key?**

Ans. In order to calculate the scores, first of all, download the answer key and then, add 03 marks for each correct response. Deduct 01 marks for each wrong answer.

**Ques. Can I challenge the official answer key?**

Ans. Yes, a chance is given to the candidates to challenge the official answer key, if they find any errors in it.