List of top Questions asked in COMEDK UGET- 2022

The wavelength of the second line of the Balmer series is 486.4 nm. What is the wavelength of the first line of Lyman series?
Which of the following molecules does not exhibit dipole moment?
(i) CCl$_4$
(ii) CO$_2$
(iii) NH$_3$
(iv) CHCl$_3$
(v) H$_2$O
(vi) CH$_3$–O–CH$_3$
Which of the following vitamin is responsible for beri-beri disease?
Barbiturates are used to treat
Two charged spheres of \( -20\, \mu\text{C} \) and \( 60\, \mu\text{C} \) are kept at a certain distance. They are touched and kept again at the same distance. What is the ratio of force experienced before and after?
If 2 and 3 are intercepts of a line \( L = 0 \), then the distance of \( L \equiv 0 \) from the origin is
The spectrum of He\(^+\) is similar to
If \(K_1\) and \(K_2\) are maximum kinetic energies of photoelectrons emitted when lights of wavelengths \(\lambda_1\) and \(\lambda_2\), respectively incident on a metallic surface and \(\lambda_1 = 3\lambda_2\), then
Which of the following is added to soaps to impart antiseptic properties?
Increasing order of bond order of oxygen and its ions is
How many atoms are present in hcp per unit cell?
The P – O bond order in \( \text{PO}_4^{3-} \) is
What is the function of platelets?
A particle of mass \( m \) is moving in a horizontal circle of radius \( r \) under a centripetal force given by \( \left( \frac{-K}{r^2} \right) \), where \( K \) is a constant. Then
A force \( F \) applied on the wire of radius \( r \) and length \( L \) and change in the length of the wire is \( l \). If the same force \( F \) is applied on the wire of the same material and radius \( 4r \) and length \( 4L \), then change in length of the other wire is
The distance of point \( (1, 2) \) from line \( x + y + 2 = 0 \) measured along the line parallel to \( 2x - y = 5 \) is equal to:
The equation of the pair of angle bisectors of the line \( x^2 - 4xy - 5y^2 = 0 \) is:
The essential amino acid are
(i) Leucine
(ii) Glutamic acid
(iii) Asparagine
(iv) Valine
Choose the correct option from the following:
Which of the following gases is responsible for acid rain?
Which of the following statement is incorrect for \( \mathrm{H_2O_2} \) structure?
Water is poured in a tank through a cylindrical tube of area of cross-section \( A \) and ejecting water at a constant speed 4 m/s. The tank contains a hole of area \( \frac{A}{2} \) at the bottom. The level of water in the tank will not go up beyond
Which of the product is not possible in Wurtz reaction?
The AC voltage across a resistance can be measured using a
O\(_2^{−}\), F\(^−\), Mg\(^{2+}\), Al\(^{3+}\), O\(_2\), F\(_2\). How many of the species given above are isoelectronic?
Evaluate the integral \( \int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} \cos x \, dx \)