List of top Questions asked in AP ECET CE- 2025

If \(\sin 5x + \sin 3x + \sin x = 0\) then the value of x other than zero lying between \(0 \le x \le \frac{\pi}{2}\) is
A fixed beam AB of span 10 m is subjected to a concentrated load of 72 kN acting at mid span C. The maximum bending moment in the beam is
The maximum energy that a given component can absorb without undergoing any permanent deformation up to elastic limit is known as
A composite bar consisting of two different materials having same length and same cross- sectional area will have the same
If the Poisson's ratio of the material is 0.25, then the ratio of modulus of rigidity to modulus of elasticity is
A bar of square cross section of side 10 mm and length 400 mm is subjected to a tensile load of 60 kN. If the modulus of elasticity of the material is 200 GPa, the elongation of the bar is
Which compound is mainly responsible for the depletion of ozone layer?
Greenhouse effect is caused by
Liquefied petroleum gas (LPG) mainly contains
We can overcome the undesirable properties of natural rubber by heating natural rubber with
The monomer involved in the formation of polystyrene is
Which of the following is not a co-polymer?
Tarnishing of silver is due to formation of
The cell formed in bent pipes is an example of
Identify the pair of chlorides responsible for permanent hardness of water.
What is the degree of hardness (in ppm) of a sample containing 19 mg of MgCl\(_2\) (Molecular Weight = 95) in 2 kg water sample? (express it in terms of equivalents of CaCO\(_3\))
In the removal of permanent hardness of water by permutit process, Na\(^+\) ions of permutit are exchanged with which ions of water?
The standard electrode potentials of Zn, Ag and Cu are -0.76, +0.80 and +0.34 V respectively. Identify the correct statement from the following.
The amount of silver (in mg) deposited when 9.65 coulombs of electricity is passed through an aqueous solution of silver nitrate is (Ag=108 u) (1F=96500 C mol\(^{-1}\))
Aqueous solution of which of the following does not act as electrolyte?
Number of coulombs corresponding to 1 mol of electrons approximately is equal to
4 g of NaOH is dissolved in 1.0 L solution. The pH of solution is
Identify the pair containing only Lewis acids
3 x 10\(^{22}\) molecules of Na\(_2\)CO\(_3\) (molecular weight = 106) present in 500 ml of solution. The normality of the solution formed is (N = 6 x 10\(^{23}\) mol\(^{-1}\))
x ml of 0.1 M NaOH solution is diluted with distilled water to get 250 ml of 0.01 M solution. The value of x (in ml) is