List of top Questions asked in IPU CET- 2018

A positive charge enters a magnetic field and travels parallel to but opposite the field. The charge feels or experiences
The engineer of a train blows the train whistle as he approaches a crossing. A few moments later, he hears an echo from the whistle. The engineer hears the echo of the whistle because of
A TV tower has a height of 100 m. How much population is covered by TV broadcast, if the average population density around the tower is \( 1000 \, {km}^{-2} \) (radius of Earth = \( 6.4 \times 10^6 \, {m} \))?
A substance's specific heat is a function of its
Which one of the following electrolytes is most effective for the coagulation of $Fe(OH)_3$ sol?
For the isoelectronic series \(S^{2-}, Cl^{-}, Ar, K^{+}\) and \(v\), which species requires the least energy to remove an outer electron?
Which of the following best explains, why a hot air balloon rises?
Beyond the critical point of H2O

The rate of the chemical reaction between substance A and B is found to follow the rate law. rate = \( k[A]^2[B] \), where k is the rate constant. The concentration of A is reduced to half of its original value. To make the reaction occur at 50% of its original rate, the concentration of B should be

On combustion of x-g of ethanol in a bomb calorimeter, y-joules of heat energy is produced. The heat of combustion of ethanol (\(\Delta H_{{comb}}\)) is
The energy required to excite the electron in the atom from n=1 to n=2, when the ionisation enthalpy of hydrogen atom is \(1.312 \times 10^6\) J/mol will be (in the unit of \(10^5\))
When 2.00 g of a certain volatile liquid is heated, the volume of the resulting vapour is 821 mL at a temperature of 127°C at standard pressure. The molecular mass of this substance is:
When 4A of current is passed through a 1.0L, 0.10 M Fe\(^3+\)(aq) solution for 1 hour, it is partly reduced to Fe(s) and partly to Fe\(^2+\)(aq). Identify the incorrect statement.
Which of the following stereoisomers is a major image of itself?
Given a molecule with the general formula AB, which one of the following would be the most useful in determining whether the molecule was bent or linear?
Which of the following molecules can be described as having sp hybridisation?
Which of the following represents an ester?
Calculate the rate constant for the radioactive disintegration of an isotope that has a half-life of 6930 yr.

Arrange the following compounds in the increasing order of their reactivity towards HCN: 
I. Acetaldehyde 
II. Acetone 
III. Di-tert-butyl ketone

Choose the most appropriate options. The magnetic moment of M^{x+} (atomic number = 25) is $\sqrt{5}$ BM. Then, the oxidation number x of M is:
Which of the following elements is the most chemically similar to Na?

Which species have delocalised electrons? 

When the solids Ba(OH)2 and NH4SCN are mixed, a solution is produced and the temperature drops. \[ {Ba(OH)}_2(s) + 2{NH}_4{SCN}(s) \rightarrow {Ba(SCN)}_2(aq) + 2{NH}_3(g) + 2{H}_2{O}(l) \] Which statement about the energetics of this reaction is correct?
Compared to an electron with a principal quantum number of 1, an electron with a principal quantum number of 2 will have a

Which of the following are true statements? 
I. The heat capacity of a substance is the amount of heat that substance can hold per unit of temperature. 
II. The specific heat for a single substance is the same for all phases of that substance. 
III. When heat is added to a fluid, its temperature will change less if it is allowed to expand.