Question
The average age of a group of 20 students is 50
years. Two persons of age 50 years and 30 years, left the group and 2 persons of age 70 years and 90 years, joined the group. Find the new average age of the group.Solution
Required average = {(20 × 50) – 50 – 30 + 70 + 90}/20 = 54 years
Which of the following is a characteristic property of acids ?
During the fermentation of sugar, the compound which is always formed is…………?
Which of the following is a plant hormone ?
Which of the following pairs of vector and disease is/are correctly matched?
Vector Disease
- Anopheles — Malaria...
Which of the following statement(s) is/are true?
I. During inhalation ribs move out
II. During exhalation ribs move in
Kindly Study the following questions carefully and choose the right answer.
Which of the following is/are true with respect to Amoeba?
I...
Typhoid is caused by ______.
The force which opposes the relative motion between different layers of liquid or gases is called –
Decibel is used to measure the ___________.
For a perfectly elastic collision, the coefficient of restitution (eee) is
