List of top Questions asked in NEET (UG), KCET

Each side of a metallic cube of mass 5.580 kg is measured to be 9.0 cm. Keeping the significant figures in view, the density of the material of the cube can be best expressed as X $\times$ 10³ kg m⁻³, where the value of X is: ____.

An electron falls through a distance 1.5 cm in a uniform electric field of magnitude 2.0 \(\times\) 10\(^4\) N/C from rest. The time taken to cover this distance in second is \textunderscore\textunderscore\textunderscore\textunderscore\textunderscore.
(e = 1.6 \(\times\) 10\(^{-19}\) C, m\(_e\) = 9.11 \(\times\) 10\(^{-31}\) kg)

For a simple pendulum, having time period T, the variation of kinetic energy (K.E.) with time (t) is represented by: ____.

What is the probability of having children with 'O' blood group, where both mother and father are heterozygous for 'A' and 'B' blood group, respectively ?

In a DNA molecule, cytosine is 28%. Calculate the percentage of adenine.

The current I in the circuit shown below is: (All diodes are ideal and identical)

The number of hydrogen atoms present in \(5.4\text{ g}\) of urea is: \[ \text{Given: Molar mass of urea }=60\text{ g mol}^{-1} \] \[ N_A=6.022\times10^{23}\text{ particles mol}^{-1} \]

The compound from which chlorobenzene cannot be prepared easily is

Consider two uncharged capacitors of equal capacitance 200 pF. One of them is charged by a 100 V supply and disconnected. Now this capacitor is connected to the uncharged capacitor. The amount of electrostatic energy lost in the process is: ____.

A uniform metallic wire having resistance 4 $\Omega$ is bent to form a square loop (ABCD). A resistance of 2 $\Omega$ is connected between points B and D and a battery of 2 V is connected across points A and C as shown in the figure. Now the amount of current (I) is: ____.

A 100-turn closely wound circular coil of radius 5 cm has a magnetic field of 3.14 $\times$ 10⁻³ T at its centre. The current flowing through the coil, and the magnitude of the magnetic moment of this coil are, respectively: (Take $\mu_0 = 4\pi \times 10^{-7}$ T m/A)

The toxin proteins isolated from {Bacillus thuringiensis, coded by which of the following genes would control cotton bollworms and corn borer, respectively ?}

Five capacitors of capacitances C₁ = C₂ = C₃ = C₄ = 10 $\mu$F and C₅ = 2.5 $\mu$F are connected as shown, along with a battery of 50 V. The equivalent capacitance and the charges on each capacitor respectively are: ____.

Match List I with List II with respect to chronology of evolution of life forms :

List I             List II
A. About 65 mya    I. Jawless fish probably evolved
B. About 500 mya   II. The dinosaurs suddenly disappeared from the earth
C. About 350 mya   III. Seaweeds and few plants probably existed
D. About 320 mya   IV. Invertebrates were formed and became active

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The line $L_{1}$ joining the two points $(-1, 2)$ and $(3, 6)$ divides the line $L_{2}$ which passes through $(3, -1)$ in the ratio $1 : 3$ internally, then the equation of $L_{2}$ is

Arrange the following events occurring in Renin-Angiotensin mechanism in the correct order :
A. Increase in blood pressure and Glomerular filtration rate.
B. Reabsorption of $Na^+$ and water from distal parts of tubule due to Aldosterone.
C. Fall in Glomerular filtration rate.
D. Vasoconstriction by Angiotensin II and release of Aldosterone.
E. Renin converts Angiotensinogen into Angiotensin I, followed by Angiotensin II.
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When \(1\ dm^3\) of \(CO_2\) gas is passed over hot coke, the volume of gaseous mixture after complete reaction at STP becomes \(1.4\ dm^3\). The composition of the gaseous mixture at STP is:

A point charge is placed in a moving train. A passenger A sitting in the train and person B on the ground observe the fields due to this charge. Then

The sixth mutant codon of beta globin gene causing polymerization of Haemoglobin and change in RBC shape is ________

A rectangular wire loop of sides 8 cm and 3 cm with a small cut, is moving out of a region of uniform magnetic field of magnitude 0.3 T directed normal to the plane of the loop. The emf developed across the cut, if the velocity of the loop is 2 cm s⁻¹, in a direction normal to the shorter side of the loop, will be: ____.

The flightless bird with forelimbs modified as paddle-like structures suited for swimming is known as:

Select the correct statements regarding cell membrane in eukaryotic cell.
A. Membrane of human RBCs has approximately 52% protein.
B. Major phospholipids are arranged in a bilayer.
C. Extensions of the plasma membrane into the cell form mesosomes.
D. Tails towards the inner part of lipids are hydrophobic and thus protected from aqueous medium.
E. Glycocalyx is present on the outer surface of the plasma membrane.
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