List of practice Questions

The pH and conductance of a weak acid (HX) was found to be 5 and \(4\times10^{-5}\) S, respectively. The conductance was measured under standard condition using a cell where the electrode plates having a surface area of 1 cm\(^2\) were at a distance of 15 cm apart. The value of the limiting molar conductivity (\(\Lambda_m^\circ\)) is___ S cm\(^2\) mol\(^{-1}\) (nearest integer) (Given: degree of dissociation \(\alpha \ll 1\))
  

गद्यांश के अनुसार तकनीक के अत्यधिक प्रयोग से क्या बढ़ रहा है? 
 

Consider two distinct positive real numbers \(m, n\), with \(m > n\).

Let \(x = n^{\log_{10}(m)}\) and \(y = m^{\log_{10}(n)}\). The relation between \(x\) and \(y\) is _______.

The most suitable method for disposal of municipal solid waste in large cities is:

'खड़-खड़ खड़ताल बजा रही विसुध हवा' - काव्य पंक्ति में कौन-सा अलंकार है? 
 

How many molecules are secondary alcohol? 

The current passing through a conducting loop in the form of equilateral triangle of side $4\sqrt{3}$ cm is 2 A. The magnetic field at its centroid is $\alpha \times 10^{-5}$ T. The value of $\alpha$ is ___. (Given : $\mu_0 = 4\pi \times 10^{-7}$ SI units)
Number of moles and number of molecules in 1.4187 L of SO₂ at STP respectively are
A student has a resting heart rate of 72 beats per minute and a maximum heart rate of 196 beats per minute. According to the Karvonen Formula, what will be the target heart rate at 70% intensity?
Find the next term in the series:
2, 6, 12, 20, 30, ?
For a metal of work function 6.6 eV, which of the following wavelengths of incident radiation does not give rise to the photoelectric effect? (Take Planck’s constant as 6.6 $\times$ 10⁻³⁴ Js)

तुलसीदास अथवा माखनलाल चतुर्वेदी की काव्यगत विशेषताएँ निम्न बिंदुओं के आधार पर लिखिए: 
(i) दो रचनाएँ 
(ii) भावपक्ष

A student has planned to prepare acetanilide from aniline using acetic anhydride. The student has started from 9.3 g of aniline. However, the student has managed to obtain 11 g of dry acetanilide. The % yield of this reaction is

भारतेन्दु युग' की समयावधि है

The figure shows two 4-tile patterns.
Either one or both of the patterns can be used any number of times and in any
orientation to construct a new pattern. Which one of the options below cannot be
constructed by using only these two 4-tile patterns assuming there are no overlaps
among them?

Which statements are NOT TRUE about $XeO_2F_2$?
A. It has a see-saw shape.
B. Xe has 5 electron pairs in its valence shell in $XeO_2F_2$.
C. The O-Xe-O bond angle is close to $180^\circ$.
D. The F-Xe-F bond angle is close to $180^\circ$.
E. Xe has 16 valence electrons in $XeO_2F_2$.
In the Hardy–Weinberg principle, genetic equilibrium is affected by:
‘Homework is a necessary evil.’ Express your views either for or against this statement.
Let \(\alpha\) and \(\beta\) be the roots of the equation \[ 2x^2-5x-1=0. \] For \(n\in\mathbb{N}\), let \[ P_n=\alpha^n+\beta^n. \] Then the value of \[ \frac{2P_{11}\,(2P_{10}-5P_9)}{P_8\,(5P_{10}+P_9)} \] is equal to:
Benzaldehyde on treatment with concentrated NaOH undergoes Cannizzaro reaction to form:
Arrange the following compounds in increasing order of their acid strength. (A) Phenol (B) \(m\)-Nitrophenol (C) \(p\)-Nitrophenol (D) \(p\)-Cresol
Which scientist is known as the "Father of Microbiology" for first observing "animalcules"?
The unit of rate constant is per second, the order of reaction is --
Prove that :
\(\frac{\tan \theta}{1 - \cot \theta} + \frac{\cot \theta}{1 - \tan \theta} = 1 + \tan \theta + \cot \theta\).

'उत्साह' कविता में 'निराला' ने बादल का चित्रण किस रूप में किया है?