# ICSE Class 11 Science Free Doubts and Solutions

### ICSE - XI Science - Mathematics

## If A is a 3x3 matrix, then in terms of det(A), we can say that det(−2A) =_____??

**balina.akhil**3rd January 2022, 6:29 PM

### ICSE - XI Science - Physics

## The number of protons and neutrons in the universe is of the order 10 raise to the power 82 and that the sun is in the order of 10 raise to power 57 if we assume that the sun and the stars are of the same mass and find the order of stars in the universe

**chanchalagarwal2005**8th June 2021, 11:37 AM

### ICSE - XI Science - Biology

## Unicellular, non-motile algae is _________. *

**swayamh2004**30th April 2021, 12:24 PM

### ICSE - XI Science - Mathematics

## If a,b are positive real numbers then prve that log a, log a^2/b,log a^3/b^2.....are in an A.P. also find the general term

**arora.devanshi19**27th April 2021, 12:47 PM

### ICSE - XI Science - Mathematics

## Find value of x satisfying x2 − 4x + 3 ≥ 0.

**sunil101010choudhary**16th March 2021, 11:36 AM

### ICSE - XI Science - Physics

## A man weighing 70 kg carries a 30 kg box to the top of a building 20 m high . Calculate the work done by the man .

**Chaudharidc009**3rd January 2021, 8:29 PM

### ICSE - XI Science - Mathematics

## Can anyone please differentiate the 12th question using first principles

**nishabr7**14th December 2020, 11:43 PM

### ICSE - XI Science - Mathematics

## which option is correct

**medammanilearn**20th November 2020, 9:26 AM

### ICSE - XI Science - Mathematics

## Find comjugate of 2omega -3i

**arifzoyaan118**20th September 2020, 8:25 PM