GATE 2026 BT – Previous Year Questions with Solutions
All 65 questions of GATE 2026 BT with answers and explanations. Read each question, then practise it by topic or as a full paper.
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- Question 1 – "He often the numbers. False claims are not going to help. Honesty trust", said the manager. Choose the option with the correct order of words to fill…
- Question 2 – In the sequence of tiles shown below, the missing tile indicated by the question mark should be
- Question 3 – A school has 100 students distributed among 1st to 10th standards. Based on this, which one of the following statements is always correct?
- Question 4 – How many 3-digit numbers can be formed using three distinct single digit prime numbers?
- Question 5 – In a group of students, 10 students like Mathematics, 12 students like English, 4 students like both Mathematics and English, and 6 students like…
- Question 6 – Charity : P :: Retaliation : Q Choose the appropriate pair of words P and Q that fit the analogy.
- Question 7 – A paper shown in Panel I is folded along the dashed lines (- - -) to construct a cube. The shaded regions shown in Panel I appear on the outer surface…
- Question 8 – Consider the cube shown below with its 8 corners labelled a, b, c, d, e, f, g, and h. The figure is representative. All corners are to be colored such…
- Question 9 – Four hills H1, H2, H3, and H4 are present in an area. The following observations are made about them: i. Neither H2 nor H3 is the easternmost hill.…
- Question 10 – As shown in the figure, circle C 1 with center O 1 and radius r 1 touches the square VWXY at points P and Q while circle C 2 with center O 2 and…
- Question 11 – Consider the two functions f 1(x) = x2 - 4x - 2 and f 2(x) = x2 - 2x + 2. Which of the following is the value of (f 1(x) + f 2(x)) as x 2?
- Question 12 – Which of the following is one of the eigenvalues for the matrix given below? bmatrix 3 & 4 \\ 4 & -3 bmatrix
- Question 13 – Which of the following functions has the highest area under the curve between x = 0 and x = 10?
- Question 14 – Cancer cells display a high level of heterogeneity in the expression of TP53 protein. Which of the following techniques can be directly used to…
- Question 15 – The transfer function of a Proportional-Integral (PI) controller G C(s) is given by G C(s) = K C(1 + 1 Is) where K C is the controller gain, I is the…
- Question 16 – Which of the following enzyme is involved in the protection of cells from reactive oxygen species?
- Question 17 – In nitrogen fixation, to reduce nitrogen to ammonia, which one of the following shows the correct order of electron flow?
- Question 18 – For monoclonal antibody production, hypoxanthine .
- Question 19 – Which one of the following proteins would elute third in gel filtration chromatography from a mixture of four proteins given below?
- Question 20 – Which one of the following antibiotics blocks protein chain elongation by preventing the action of peptidyl transferase?
- Question 21 – The catalytic efficiency of an enzyme following Michaelis-Menten kinetics is defined by
- Question 22 – The RNA primer synthesized during bacterial DNA replication is removed by .
- Question 23 – Match the carbohydrates in Column I with the correct glycosidic linkages involved in Column II. Column I Column II --- --- P. Amylose 1. (14) Q.…
- Question 24 – The correct sequence of the four steps involved in anaerobic production of biogas from complex organics is:
- Question 25 – Which one of the following options represents the products of light reactions of photosynthesis in plants?
- Question 26 – Which component of the CRISPR/Cas9 gene editing system is NOT of natural origin?
- Question 27 – The equation d2ydx2 - y = 0 has a solution of the form y = eAx. The value(s) of A satisfying this is/are:
- Question 28 – Which of the following drugs inhibit(s) ATP-ADP translocase?
- Question 29 – Which of the following is/are extra-cellular matrix protein(s)?
- Question 30 – BLAST and its extensions can be used to determine similarity of a query protein sequence with which of the following database(s)?
- Question 31 – The mean of the following series is . (rounded off to three decimal places) 0.01, 0.02, 0.03, , 1
- Question 32 – You are characterizing a new enzyme isolated and purified in the laboratory. If the maximum velocity of the enzyme is 1800 moles L-1 min-1 and the…
- Question 33 – To determine the viable cell count of a bacterial culture, you have plated 50 L of a 100-fold diluted sample of the culture on a nutrient agar plate…
- Question 34 – Given below is the Gibbs free energy change ( G) in kilo Joules per electron equivalent (kJ e-eq-1) at pH 7.0, of organic and inorganic half…
- Question 35 – You have purified an enzyme using a series of chromatographic methods. It was observed that a 10 g mL-1 of this purified enzyme converted 10 mM…
- Question 36 – In the open-loop process shown in the figure, the input U(s), the transfer function G p(s) and the output Y(s) are given in the Laplace domain in…
- Question 37 – Match the immunological terms in Column I with their function/description in the Column II Column I Column II --- --- P. J gene 1. Suppresses immune…
- Question 38 – Match the genetic disorders in Column I to the corresponding underlying cause in Column II Column I Column II --- --- P. Klinefelter Syndrome 1.…
- Question 39 – Match the biomolecules in Column I with their function given in Column II Column I Column II --- --- P. Lectins 1. Acts as ATP dependent pump to…
- Question 40 – By elemental analysis of a biomass sample, it was found that the cells in the given sample are composed of (by weight) C=50%, H=8%, O=20%, N=10% and…
- Question 41 – For the given matrix, which of the statements given below is/are true? bmatrix 3 & 1 & 5 \\ 2 & -1 & 0 \\ 5 & 2 & 9 bmatrix
- Question 42 – Messenger RNAs (mRNAs) translate to generate polypeptides and the translation terminates at the UGA, UAG or UAA stop codons. The AGA codon acts as…
- Question 43 – The RNA sequence below depicts the part of a 330 nucleotides long mRNA and it encodes the C-terminal portion of a protein. 5'-… … … AAC ACC ACG ACC…
- Question 44 – A microbial culture is being grown in a bioreactor with continuous aeration. The dissolved oxygen probe provided with the system shows a reading of…
- Question 45 – For a Newtonian fluid, a plot of shear stress (on Y axis) against shear rate (on X axis) will result in a straight line .
- Question 46 – In an aerobic fermentation with air sparging, which of the following options can be used to increase the volumetric mass transfer coefficient for…
- Question 47 – For a liquid flowing in a circular cross section pipe, the transition from laminar to turbulent flow will NOT depend on which of the following…
- Question 48 – Which of the following is/are posttranslational modification(s) involved in epigenetic control of gene expression?
- Question 49 – For an ideal plug flow reactor, which of the following statements is/are true?
- Question 50 – An enzyme-catalyzed reaction is found to have G = -100 kJ mol-1. Which of the following statements about this reaction is/are true?
- Question 51 – Consider the equation dydx = 1x The value of the integral 12 dy using trapezoidal method and interval h = 0.25 is . (rounded off to two decimal…
- Question 52 – If the straight lines given by the following two equations are parallel to each other, the value of a is . (answer in integer) 4x + 7y = 6; 3ax + 42y…
- Question 53 – A straight line y = x - 1 intersects a circle with center at x = 1, y = 1 and radius of magnitude 1 at two points. The length of the chord formed by…
- Question 54 – A heat exchanger during operation in a bioprocess has a steady temperature of 90 oC. After completion of its operation, it was shut down and it was…
- Question 55 – A microbial culture (following Monod model for growth) has a maximum specific growth rate of 0.1 h-1, Monod constant of 1 mg L-1 and endogenous decay…
- Question 56 – A CSTR with a volume of 100 m3 is operated in cell recycle mode. At a volumetric flow rate of 10 m3 day-1 and effluent biomass of 20 mg L-1, the…
- Question 57 – The electron equivalent per liter (e-eq L-1) of acetate ion solution of concentration 10 g L-1 is e-eq L-1. (rounded off to one decimal place)
- Question 58 – From the following plot of dydx versus x and if y(2) = 5, the value of y(3) is . (rounded off to one decimal place)
- Question 59 – A batch sterilizer is being operated at 121 oC for sterilizing a medium containing microbial cells. Assume that the thermal deactivation of cells is a…
- Question 60 – A substrate is consumed in a zero order reaction such that its concentration falls from 42 g L-1 to 14 g L-1 in 4 hours. The total time taken for…
- Question 61 – A microbe that follows Monod growth kinetics on a limiting substrate (maximum specific growth rate of 0.5 h-1 and Monod constant of 0.1 mg L-1) is…
- Question 62 – It is desired to cultivate 150 mg (dry weight) microbial cells with an empirical formula of C 5H 7O 2N. If the phosphorus requirement for the cells is…
- Question 63 – In the process of generating a clonal mammalian cell line, a single cell was seeded in a well of a cell culture plate. After the first 48 hours, one…
- Question 64 – A disease-associated allele shows X-linked recessive inheritance. If the mother is a carrier of the disease, the father is genetically normal and the…
- Question 65 – A packed bed bioreactor with length 1 m and inside diameter 10 cm has liquid flowing at an interstitial velocity of 1 cm s-1. Given a volumetric flow…