List of practice Questions

\(E^\circ = 1.10\ \text{V}\) for the cell: \(\mathrm{Zn(s) + Cu^{2+}(aq) \rightleftharpoons Zn^{2+}(aq) + Cu(s)}\). At \(298\ \text{K}\), the equilibrium constant is \(y \times 10^{37}\). Find \(y\) (to two decimals). (Given: \(F = 96485\ \text{C mol}^{-1}\), \(R = 8.314\ \text{J K}^{-1}\text{mol}^{-1}\)).

A body of mass $2\, kg$ is initially at rest It starts moving unidirectionally under the influence of a source of constant power P Its displacement in $4 s$ is $\frac{1}{3} \alpha^2 \sqrt{P} m$ The value of $\alpha$ will be_______

Identify the countable and uncountable nouns in the following sentence :
"There are two books on the shelf, and I need some advice."

Choose the correct conditional sentence from the options :

Identify the figure of speech in the following sentence: "The stars danced in the night sky."

The given sentence is in active/passive voice. Change the voice of the sentence. Select the correct option from the sentence below. She has preserved all the old letters of her dead lover.

Identify the error in the following sentence and choose the correct option: "The team have been practicing every day for the upcoming tournament."

The given sentence is in active/ passive voice. Change the voice of the sentence. Select the correct option from the sentence below.
She has preserved all the old letters of her dead lover.

Fill in the blank with the appropriate conjunction: I will attend the meeting, ............ I have to finish this report first.

Choose the correct conditional sentence from the options:

Identify the figure of speech in the following sentence :
"The stars danced in the night sky."

Select the compound word from the following options:

Fill in the blank with the correct preposition: She is allergic ......... cats.

If the angle between the two lines 2x²+5xy +3y² +6x+7y+4=0 is represented by tan^-1(m), then m is equal to

Identify the type of clause in the sentence :
"Although she tried her best, she couldn't win the competition."

Identify the type of clause in the sentence: "Although she tried her best, she couldn't win the competition."

Statement: Over the past decade, the average temperature in City X has increased by 2 degrees Celsius.
Which of the following can be reasonably inferred from the statement ?

If male population above Educational index in UP is 1.6 lakhs find the total population of UP in approx value (in lakhs).

Which of the following sentences cannot be converted into passive voice?

Situation: There is an increasing trend of teenage substance abuse in a community.
Course of Action:
a) Implement stricter laws and penalties for the possession of substances by teenagers.
b) Organize awareness programs in schools and communities to educate teenagers about the consequences of substance abuse.
c) Conduct random drug tests for all teenagers in the community.
d) Establish rehabilitation centers specifically for teenagers involved in substance abuse.

The mean of \(50\) observations is \(28\). Later it was found that the value \(70\) had been recorded as \(7\) and the value \(24\) had been recorded as \(42\). Find the correct average.