Download App

Heat Transfer in Nature — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceHeat Transfer in Nature1 Mark
MCQ
Assertion (A): Woollen clothes keep us warm.
Reason (R): Wool traps air which is a poor conductor of heat.
  • ✓
    Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).
  • B
    Both Assertion (A) and Reason (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.
✓

Answer

Correct option: A.
Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).
A

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Assertion (A) & Reason (B) MCQ" from Heat Transfer in Nature→Heat Transfer in Nature — all question types→Science STD 7 question papers→Gujarat Board STD 7 question papers→Gujarat Board question paper generator→

Similar questions

Assertion (A): Green pigment found in the plant’s leaves is called chlorophyll.
Reason (R): Chlorophyll is responsible for the green colour of the plants.
→
Assertion (A) Xylem transports food and minerals in the plant.
Reason (R) Xylem and phloem transport different substances in plants.
→
Assertion (A) Seeds are dispersed to different places.
Reason (R) Drumstick and maple have winged seeds.
→
Assertion (A) The breathing rate decreases during exercise.
Reason (R) More oxygen is needed by the muscles during exercise.
→
Assertion (A): A filament in an incandescent lamp is made of tungsten.
Reason (R): Tungsten filaments glow because they resist current and produce heat.
→
Assertion (A): Red ink experiment proves water transport.
Reason (R): Red ink dissolves starch in leaves.
→
The following question consist of two statement
Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below
Assertion (A) We feel more comfortable in dark coloured clothes in winter season.
Reason (R) Dark coloured clothes reflect most of the heat that falls on them.
→
Assertion (A): Non-metals are non-sonorous.
Reason (R): Non-metals produce a ringing sound when struck.
→
The following questions consist of two statements Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.
Assertion (A) We feel more comfortable in light coloured clothes in the summer.
Reason (R) Light coloured clothes absorb less heat from the sun.
→
Assertion (A): During menstruation, blood is discharged from the body as part of the cycle.
Reason (R): Menstruation lasts for eight to fifteen days.
→