User Forum

Read the following statements and select the correct option.
Statement 1 : Yeast is single-celled organisms which is used in baking and brewing industry.
Statement 2 : Yeast carry out anaerobic respiration, i.e., fermentation and release, ethyl alcohol and carbon dioxide.

A Both statements 1 and 2 are true and
statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true but statement 2 is false.
D Both statements 1 and 2 are false.

Read the given passage and select the correct option for (i) - (iii).

(i) are present in the chest cavity. This cavity is surrounded by (ii) on the sides which form a cage like structure. A large muscular sheet called (iii) forms the floor of the chest cavity.

A (i)-Lungs; (ii)-Ribs; (iii)-Diaphragm
B (i)-Diaphragm; (ii)-Ribs; (iii)-Lungs
C (i)-Bronchi; (ii)-Ribs; (iii)-Lungs
D (i)-Trachea; (ii)-Bronchi; (iii)-Lungs

Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.

(i) In cockroaches, air enters the body through spiracles.
(ii) During heavy exercise, we get cramps in the legs due to accumulation of carbon dioxide.
(iii) Normal range of breathing rate per minute in an average adult person at rest is 12-18.
(iv) During exhalation, the ribs move upwards.

Read the given statements and select the correct option.
Statement 1 - We should use jute bags instead of plastic bags for carrying goods.
Statement 2 - Jute bags are cheaper than plastic bags.

ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true and statement 2 is false.
DBoth statements 1 and 2 are false.

The given picture shows a camel with its different parts labelled as P, Q, R, S, T and U.


Which of the following statements is incorrect regarding its adaptations?
(i) Q is slit-like and has flap to prevent the entry of sand.
(ii) R is leathery for chewing thorny plants.
(iii) T is used for storing water.
(iv) S is sticky and webbed to prevent it from sinking into sand.

A(i) and (iii) only
B(ii) and (iv) only
C(iii) and (iv) only
D(ii) and (iii) only

In the experiment, if A is plated with copper, the anode would be


A A
B B
C C
D Data insufficient

Refer to the given flow chart.

Identify W, X, Y and Z and select the correct statement regarding them.

ARed Fort is made of W.
BX typically breaks into flat thin layers and is used in making cement.
CY is porous and light weight rock.
DZ is formed from a type of sedimentary rock and found in different colours.

In the given figures, X, Y and Z represent three different states of matter.

Select the correct option regarding X, Y and Z.

AX is a liquid while Z is a gas.
BY is a solid while X is a liquid.
CX and Y are solids while Z is a gas.
DY is a gas while Z is a solid.

Which of the following statements is/are correct?
(i) By migrating, Arctic tern sees two summers each year.
(ii) For breeding, Salmon migrates from sea to fresh water whereas eel migrates from fresh water to sea.
(iii) Humpback whales migrate from Antarctica to tropical waters of Australia for breeding.

A(i) and (ii) only
B(ii) and (iii) only
C(i) and (iii) only
D(i), (ii) and (iii)