National Science Olympiad Forum By SOF Olympiad Trainer - Page 384
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Chanpartap from The British Co Ed High School , Patiala
Subject :NSO    Class : Class 7

Study the given differences between two blood vessels.

Identify X and Y and select the correct option.

A Walls of X are permeable to gases and other substances whereas walls of Y are impermeable to gases and other substances.
B X carries deoxygenated blood except pulmonary vein whereas Y carries oxygenated blood except the pulmonary artery.
C A series of valves are present in Y which help to prevent back flow and allow blood to flow only towards the heart.
D All of these.


Post Your Answer

Chanpartap from The British Co Ed High School , Patiala
Subject :NSO    Class : Class 7

Post Your Answer

Sunita from Dps, Greater Noida
Subject :NSO    Class : Class 5

Ans 1:

from , rajahmundry
Class : Class 2
 Metals are generall sonorous. That is they make a ringing sound when struck. Therefore, they are used for making bells. Metal wires are used in musical instruments.  Metals such as iron are very strong. Therefore, it is therefore, widely used in the construction of buildings, bridges, railway lines, carriages, vehicles and machinery So,Ans is D

Ans 2:

from , rajahmundry
Class : Class 2
ans D

Ans 3:

Sunita from Dps, Greater Noida
Class : Class 9
dt

Ans 4:

from , rajahmundry
Class : Class 2
 Metals are generall sonorous. That is they make a ringing sound when struck. Therefore, they are used for making bells. Metal wires are used in musical instruments.  Metals such as iron are very strong. Therefore, it is therefore, widely used in the construction of buildings, bridges, railway lines, carriages, vehicles and machinery. SO,Ans is - D

Ans 5:

from , rajahmundry
Class : Class 2
 Metals are generall sonorous. That is they make a ringing sound when struck. Therefore, they are used for making bells. Metal wires are used in musical instruments.  Metals such as iron are very strong. Therefore, it is therefore, widely used in the construction of buildings, bridges, railway lines, carriages, vehicles and machinery. SO,Ans is - D

Ans 6:

from , rajahmundry
Class : Class 2
ans D

Ans 7:

from , rajahmundry
Class : Class 2
 Metals are generall sonorous. That is they make a ringing sound when struck. Therefore, they are used for making bells. Metal wires are used in musical instruments.  Metals such as iron are very strong. Therefore, it is therefore, widely used in the construction of buildings, bridges, railway lines, carriages, vehicles and machinery So,Ans is D

Ans 8:

from , rajahmundry
Class : Class 2
 Metals are generall sonorous. That is they make a ringing sound when struck. Therefore, they are used for making bells. Metal wires are used in musical instruments.  Metals such as iron are very strong. Therefore, it is therefore, widely used in the construction of buildings, bridges, railway lines, carriages, vehicles and machinery So,Ans is D

Ans 9:

from , rajahmundry
Class : Class 2
 Metals are generall sonorous. That is they make a ringing sound when struck. Therefore, they are used for making bells. Metal wires are used in musical instruments.  Metals such as iron are very strong. Therefore, it is therefore, widely used in the construction of buildings, bridges, railway lines, carriages, vehicles and machinery So,Ans is D

Post Your Answer

Ishaan Roy from Sri Chaitanya Techno School, Bengaluru
Subject :NSO    Class : Class 7

An astronaut is in a space station in an environment which has no acceleration due to gravity. The space station has a generator which constantly heats up the air on one side of the cabin. Which of the following statements is true about the convection currents caused by heating of air by the generator?

ACool air moves in, as the air heated by the generator rises up.
BNo conventional convection currents are set up.
CHot air, being heavy, merges into the ground and cool air moves in.
DA vacuum sets up near the generator, as all the air is sucked by it.


Post Your Answer

Ainesh das from Chrysalis, Bangalore
Subject :NSO    Class : Class 4

Post Your Answer

Ajoy Bhuyan from DELHI PUBLIC SCHOOL, Bongaigaon
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Post Your Answer

Ishaan Roy from Sri Chaitanya Techno School, Bengaluru
Subject :NSO    Class : Class 7

Post Your Answer

Ishaan Roy from Sri Chaitanya Techno School, Bengaluru
Subject :NSO    Class : Class 7

Read the given statements and select the correct option.
Statement 1 : Anaerobic respiration occurs in skeletal muscles of humans.
Statement 2 : Accumulation of lactic acid in the skeletal muscles lead to muscle fatigue.

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.


Ans 1:

AISHA from K.V.No.-1,A.F.S.,SEC.-14, GURUGRAM
Class : Class 10
B

Post Your Answer

K THAARANI PRIYA from , chennai
Subject :NSO    Class : Class 8

Post Your Answer

Shailaja Divakar from Chennai public school global school, London
Subject :NSO    Class : Class 4

Ans 1:

Savya Sanjay Agarwal from Don Bosco High School, Naigaon East
Class : Class 4
it is not the hottest planet in the universe but in solar system

Post Your Answer