TTufee Question Bank

Biology

CBSE · English · Class 12 · 16 questions with solutions

Q1SAMEDIUM

Organisms at a higher tropic level have less energy available. Comment.

Q2SAMEDIUM

Write a short note on Pyramid of numbers & biomass.

Q3SAMEDIUM

What is decomposition? Name the steps involved in it.

Q4ASSERTION_REASONMEDIUM

Assertion (A):

While diluting an acid, water is never added to concentrated acid.

Reason (R):

The process of dissolving an acid in water is highly exothermic.

A)
Both A and R are true, and R is the correct explanation of A ✔
B)
Both A and R are true, but R is NOT the correct explanation of A
C)
A is true, but R is false
D)
A is false, but R is true
Q5MCQMEDIUM

Which of the following substances turns blue litmus paper red?

A)

Acid

✔
B)

Base

C)

Salt

D)

Water

Q6MCQMEDIUM

Which acid is present in tomato?

A)

Oxalic Acid

✔
B)

Lactic Acid

C)

Acetic acid

D)

All of above

Q7MCQMEDIUM

1.What is the color of phenolphthalein in a basic solution?

A)

Yellow

B)

Colourless

C)

Pink

✔
D)

Red

Q8MCQMEDIUM

1.

What is the color change of turmeric indicator when it is added to a basic solution?

A)

Yellow

B)

Red

✔
C)

Blue

D)

Colourless

Q9MCQMEDIUM

1.What is the color change of turmeric indicator when it is added to a basic solution?A. YellowB. RedCorrect! Turmeric turns reddish-brown or red when exposed to a basic substance.C. BlueD. Colorless

A)

Yellow

B)

Red

✔
C)

Blue

D)

Colourless

Q10SAMEDIUM

Justifying the statement in terms of ecosystem "Nature tends to increase gross primary productivity, while man tends to increase the net primary productivity"

Page 1 of 2Next →

Want to build a full paper from questions like these?

Section-wise blueprints, internal choices and answer keys — generated inside the Tufee app.

Get the Tufee app →