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Question : Damping off seedlings is caused by
Option 1: Peronospora parasitica
Option 2: Albugo candida
Option 3: Phytophthora infestans
Option 4: Pythium debaryanum
Correct Answer: Pythium debaryanum
Solution : The correct answer is Pythium debaryanum.
Damping off is a horticultural disease in which seeds and seedlings die or weaken before germination. It is caused by soil-borne fungi, and the most common fungi responsible for it is Pythium debaryanum. Phytophthora, Alternaria and Fusarium
Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 383, 381, 377, 369, 353, (?)
Option 1: 325
Option 2: 323
Option 3: 322
Option 4: 321
Correct Answer: 321
Solution : Given: 383, 381, 377, 369, 353, (?)
Follow the pattern to find the missing term –
So, 321 is the missing term in the series. Hence, the fourth option is correct.
Question : Directions: At the time of sunrise, Diksha and Arpita are sitting in a park with their backs facing each other. If the shadow of Diksha falls to the right of Arpita, then in which direction is Arpita facing?
Option 1: North
Option 2: East
Option 3: West
Option 4: South
Correct Answer: South
Solution : Given: At the time of sunrise, Diksha and Arpita are sitting in a park with their backs facing each other.
At the time of Sunrise, the Sun is in the east direction, and the shadow will be in the west direction, So, it is given
Question : Directions: A square piece of paper is cut at the edges as shown and folded as shown below. How would the folded pattern look.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : When the given unfolded paper is folded, it will look like –
Hence, the fourth option is correct.
Question : If $a-b=8$ and $4ab=84$, then what is the value of $3a^3-3b^3$?
Option 1: 1016
Option 2: 2032
Option 3: 1018
Option 4: 3048
Correct Answer: 3048
Solution : Given: $a-b=8$ and $4ab=84$ ⇒ $ab=21$ Now, $a-b=8$ Cubing both sides we get, ⇒ $(a-b)^3=8^3$ ⇒ $a^3-b^3-3ab(a-b)=512$ Putting the values, we get: ⇒ $a^3-b^3-3\times 21\times8=512$ ⇒ $a^3-b^3=512+504$ ⇒ $a^3-b^3=1016$ $\therefore 3a^3-3b^3 =3\times1016=3048$ Hence, the correct answer is 3048.
Question : Directions: In the following question, out of the four alternatives, select the alternative that will improve the bracketed part of the sentence. In case no improvement is needed, select "No Improvement".
We are witnessing (not triumph but the breakdown) of democracy.
(1) not the triumph but breakdown
(2) not the triumph but the breakdown
(3) not triumph but breakdown
(4) No Improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (2)
Solution : The sentence can be improved using the second option.
The article "the" should be used before the word triumph to make it specific, conveying the meaning that the people are not witnessing the victory but the breakdown of democracy.
Therefore, the correct sentence would be:
Question : Directions: In this question, a sentence is given with a blank to be filled in with an appropriate word. Four alternatives are suggested for each question. Choose the correct alternative out of the four alternatives.
A garden knife is ___ used for right pruning.
Option 1: Generally
Option 2: Compulsorily
Option 3: Systematically
Option 4: Daily
Correct Answer: Generally
Solution : The correct answer is the first option.
Generally indicates that a garden knife is commonly or typically used for pruning but does not specify any particular method or frequency.
The meanings of the other options are as follows:
Systematically: This adverb implies that the garden
Question : Select the option that will improve the (bracketed) part of the sentence. In case of no improvement, select the option 'No improvement'. Check all radiators for (meagre leaks, special) round pipework connections.
Option 1: No improvement
Option 2: cramped leaks, specially
Option 3: small leaks, especially
Option 4: modest leaks, specially
Correct Answer: small leaks, especially
Solution : The third option is correct.
The term meagre leaks is not commonly used and can be confusing. Also, the adverb especially is the correct word to use here because it emphasises that particular attention should be given to the pipework connections.
Therefore,
Question : In a $\triangle A B C, \angle B+\angle C=110^{\circ}$, then find the measure of $\angle A$.
Option 1: 90°
Option 2: 70°
Option 3: 80°
Option 4: 60°
Correct Answer: 70°
Solution : In a $\triangle A B C, \angle B+\angle C=110^{\circ}$ The sum of angles in a triangle = 180° ⇒ $\angle A +\angle B+\angle C = 180°$ ⇒ $\angle A + 110° = 180°$ ⇒ $\angle A = 70°$ Hence, the correct answer is 70°.
Question : The given expression is equal to $\frac{\sin^4 A+\cos^4 A}{1-2 \sin^2 A \cos^2 A}$:
Option 1: 1
Option 2: –1
Option 3: 0
Option 4: 2
Correct Answer: 1
Solution : $\frac{\sin^4 A+\cos^4 A}{1-2 \sin^2 A \cos^2 A}$ Since $\sin^2A+\cos^2 A=1$ and $(\sin^2A+\cos^2 A)^2=1$, $=\frac{\sin^4 A+\cos^4 A}{(\sin^2A+\cos^2 A)^2 -2 \sin^2 A \cos^2 A}$ $= \frac{\sin^4 A+\cos^4 A}{\sin^4A+\cos^4 A -2 \sin^2 A \cos^2 A +2 \sin^2 A \cos^2 A}$ $=\frac{\sin^4 A+\cos^4 A}{\sin^4A+\cos^4 A }$ $=1$ Hence, the
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