List of practice Questions

The net number of molecule(s) of NADH formed from one molecule of glucose in glycolysis under aerobic conditions is/are _______.
Which one of the following enzymes is required to ensure the replication of a negative-sense or negative-strand RNA virus?
The number of possible unique combination(s) of linear tetrapeptides that can be made from four different amino acids using each amino acid only once in the chain is/are _____.
The relationship between birth weight and degree of survival $ (log \frac{ π‘ π‘’π‘Ÿπ‘£π‘–π‘£π‘œπ‘Ÿπ‘  }{ π‘›π‘œπ‘›βˆ’π‘ π‘’π‘Ÿπ‘£π‘–π‘£π‘œπ‘Ÿπ‘ })$ in 6908 human births in an obstetric hospital is shown in the figure below. The mode of selection for birth weight is
The relationship between birth weight and degree of survival $ (log \frac{ π‘ π‘’π‘Ÿπ‘£π‘–π‘£π‘œπ‘Ÿπ‘  }{ π‘›π‘œπ‘›βˆ’π‘ π‘’π‘Ÿπ‘£π‘–π‘£π‘œπ‘Ÿπ‘ })$ in 6908 human births in an obstetric hospital is shown in the figure below. The mode of selection for birth weight is
Among $i-BuNH_2, NH_3, Me_2NH, EtNH_2,$ the number of compound(s) more basic than $MeNH_2$ is/are ______.
Match the recombinant DNA products in Group I with its application in Group II
Group I Group II
P) Tissue plasminogen activator1) Emergency treatment of heart attack
Q) Erythropoietin 2) Treatment of anemia
R) Superoxide dismutase 3) Prevents tissue damage
S) Interferon4) Stimulates cells to inhibit viral replication
Among $K^+, Li^+, Rb^+, Cs^+$, the number of cation(s) having ionic radii more than $Na^+$ is/are _____.
Among the five fragments given below, <br> the number of fragment(s) accelerated to the analyzer tube in mass spectrometer with electron ionization is/are _________.
Among the five fragments given below, <br> the number of fragment(s) accelerated to the analyzer tube in mass spectrometer with electron ionization is/are _________.
A restriction endonuclease has a recognition site of 3 bases. Assuming random arrangement of nucleotides, the probability that this endonuclease will cut a piece of DNA is __________ (rounded off to three decimal places).
A massless ideal spring is hanging vertically. A sphere of mass of 500 g, suspended from the spring, stretches the spring from its initial position by 50 cm when it reaches equilibrium. The force constant of the spring is _________ $N m^{-1}$. ($Use g=10 m s^{-2}$)
Whales can dive undersea to depths of 2 km. The pressure on the whale at this depth (ignoring atmospheric pressure) is _____ $Γ— 10^6 Pa$. (Density of sea water = $1 g cm^{-3}$ and $g =10 m s^{-2}$)
A protein solution of 1 Β΅M has transmission of 40 % at 280 nm, when measured in a 1 cm cuvette using a UV-Visible spectrophotometer. The transmission of the same solution, when measured using a 2 cm cuvette is ______ %. (rounded off to the nearest integer)
The order of differential equation $\frac{𝑑^3𝑦}{dx^3} + 2 \frac{𝑑^2𝑦}{dx^2} βˆ’ 3 \frac{𝑑𝑦}{dx} + 6π‘₯^4𝑦$ = 0 is _______.
If a bacterial culture with a doubling time of 30 minutes starts with two cells, then the number of cells after 4 hours are _______.
The value of $\lim_{π‘₯β†’βˆ’3}\frac{(2π‘₯+6)}{(π‘₯+3)}$ is
The rate of transcription in a bacterium is 50 nucleotides/min and the average molecular weight of an amino acid is 110 Da. Time taken for synthesis of the mRNA of a protein with molecular weight of 110 kDa is min. (rounded off to one decimal place) Assume no abortive transcriptions and no sequences upstream of the start codon.
The βˆ†GΒ΄ and $KΒ΄_{eq}$ values of ATP hydrolysis are -32.34 kJ $mol^{-1}$ and $4.6 x10^5$, respectively. The βˆ†GΒ΄ and $KΒ΄_{eq}$ values of enzymatic hydrolysis of glucose-6- phosphate to glucose and phosphate are $-13.18 kJ mol^{-1}$ and 203.8, respectively. The βˆ†GΒ΄ value of reaction of glucose-6-phosphate formation from glucose and ATP by hexokinase is ____ $kJ mol^{-1}$ (rounded off to 2 decimal places). [All reactions are carried out at pH 7.0 and 25 Β°C].
Consider a first order reaction 𝐴 β†’ 𝐡. The initial concentration of 𝐴 is $100 mol L^{-1}$ and the value of first order rate constant is 0.01 $min^{-1}$. The concentration of 𝐴 after 10 min of reaction is ____ $ mol L^{-1}$ (rounded off to one decimal place).
$K_m$ and $V_{max}$ of an enzyme preparation are 5 Β΅M and 30 $Β΅M min^{-1}$ respectively. Considering, $K_i$ value of competitive inhibitor is 60 Β΅M, the velocity ($V_0$) of this enzyme-catalyzed reaction in the presence of 200 Β΅M of substrate and 600 Β΅M of competitive inhibitor is _______ $ Β΅M min^{-1}$ (rounded off to two decimal places).
Hollandite is an ore mineral of which one of the following elements?
The transition from spinel to perovskite structure occurs between _____.
The heat required to convert 2 kg of water at 20 Β°C in a calorimeter to steam at 100 Β°C and at atmospheric pressure (1 atm) is _____ kJ. (Specific heat capacity of water is $4.2 kJ kg^{-1} K^{-1}$ and latent heat of steam is $2256 kJ kg^{-1}$)
Which one of the following textures shows cuneiform-shape intergrowth between alkali feldspar and quartz?
An electron is accelerated from rest through a potential difference of 200 V. The de Broglie wavelength associated with this electron is _____ nm. (Rounded off to 2 decimal places) (Planck’s constant = $6.6 Γ— 10^{-34} J s, 1eV=1.6 Γ— 10^{-19} J$, mass of an electron = $9.1Γ—10^{-31} kg$)
A pelitic rock consisting of cordierite + garnet + K-feldspar + sillimanite belongs to which one of the following metamorphic facies?