Correct Answer: No substitution

Solution : The correct choice is the fourth option.

The original sentence is grammatically correct and conveys the intended meaning. It implies that the students planned to surprise the teacher on her birthday.

Therefore, the given sentence needs no substitution.

Correct Answer: Western disturbances

Solution : The correct answer is Western disturbances.

Western disturbances are extratropical weather phenomena that typically affect the Indian subcontinent, especially its northern and northwest parts. They are storms that originate in the Caspian or Mediterranean Seas and provide non-monsoonal rainfall to northwest India during

Correct Answer: In the M phase, the cell grows physically larger and copies organelles.

Solution : The correct option is In the M phase, the cell grows physically larger and copies organelles.

The M phase of the cell cycle primarily involves mitosis, where the cell divides into two daughter

Correct Answer: 3, 2, 1, 4

Solution : Given:

1. Absorption

2. Digestion

3. Nutrition

4. Excretion

First, start with Nutrition

1. Nutrition: This is the first step where an organism acquires nutrients from its external environment.

2. Digestion: Once the food is ingested, the process of digestion begins with the mechanical

Correct Answer: that he fell

Solution : The first option is the correct answer: that he fell.

"so...that" is a correlative conjunction, which are words that join two sentences but are not written together. Also, observe that "He ran so fast" is set in

Correct Answer: 149.5

Solution : Numbers between 100 and 200 which are divisible by 13 are 104, 117, 130, 143, 156, 169, 182, 195
This forms an arithmetic progression, So the average = $\frac{104+195}{2}$ = 149.5 [Using arithmetic mean = $\frac{\text{First term + Last Term}}{2}$]
Hence, the correct answer is

Correct Answer: magnetopause

Solution : The correct answer is magnetopause.

The magnetopause is a line that separates the Earth's magnetic field from the solar wind. Solar winds are a component of outer space, although Earth's atmosphere extends up to the magnetosphere. Chapman and Ferraro first proposed this boundary in 1931.
 

Correct Answer: 12.5%

Solution : The total number of neon lamps having a lifetime of 800 or more hours
= 350 + 300 + 275 + 325 + 100 = 1350
The total number of neon lamps having a lifetime of 400 or more hours but less than 800 hours

Correct Answer: 44%

Solution : Let the marked price be Rs. 100.
Discount = 20%
Selling price = 80% of marked price = 80% of Rs. 100 = Rs. 80
Amount discounted = Rs. 100 — Rs. 80 = Rs. 20
Cashback = 30% of selling price
Amount got as

Correct Answer: 3 to 4 percent

Solution : The correct option is 3 to 4 percent.

In general terms, at 20 degrees Celsius, which is a fairly common room temperature, the maximum water vapor content the air can hold is approximately 17 grams of water vapor per cubic meter of