National Science Olympiad Forum By SOF Olympiad Trainer - Page 694
  1. Home
  2. /  Forum

User Forum

Ask Your Question
rashmikedia.ca from JSS PRIVATE SCHOOL, DUBAI, Dubai
Subject :NSO    Class : Class 6

Ans 1:

Souraj Saigovindh from Sri chaitanya Techno school, Tirupur
Class : Class 6
I need help on how to arrive this answer, please share the details

Post Your Answer

naman from dps noida noida, Noida
Subject :NSO    Class : Class 5

Ans 1:

Saswatayu Sengupta from Don Bosco Park Circus , Kolkata
Class : Class 7
Leaves change colour due to the reduction of amount of the green colour pigment named chlorophyll.

Ans 2:

Sushil Kumar from dpsnoida, Noida
Class : Class 7
Leaves are colored by molecules called pigments. The pigment that causes leaves to be green is chlorophyll. Chlorophyll is important for plants to make food using sunlight. During spring and summer when there is plenty of sunlight, plants make a lot of chlorophyll. In autumn when it starts to get cold, some plants stop making chlorophyll. Instead, those plants break down chlorophyll into smaller molecules. As chlorophyll goes away, other pigments start to show their colors. This is why leaves turn yellow or red in fall.

Ans 3:

Nandana from St Thomas Residential School, Trivandrum
Class : Class 10
Leaves change colour due to the reduction of amount of the green colour pigment named chlorophyll.

Post Your Answer

Abhi Shiv from Rose Public School, Darbhanga
Subject :NSO    Class : Class 10

Ans 1:

Vaidehi from Agragami Convent School.Wardha., wardha
Class : Class 10
actually water is neutral. IRRESPECTIVE of volume ,it will contain equal no. of negative and positive charges. according to your que., you have 0.3L of water. assume that you have 36g of water(since the weight is not mentioned).Then calculate total moles of it(=2 moles).THEN ,calculate total moles of (H+) IONS i.e, +charge[=4 moles].Then,4*6.022*10power23. finally,total no. of +charge=24.088*10power23. I hope this will help you.

Post Your Answer

shauarya yadav from GURU TEGH BAHADUR PUBLIC SCHOOL, Meerut
Subject :NSO    Class : Class 5

Post Your Answer

rashmikedia.ca from JSS PRIVATE SCHOOL, DUBAI, Dubai
Subject :NSO    Class : Class 6

Post Your Answer

RiptideMel from Modern Vidya Niketan Senior Secondary School Sec 17, Faridabad
Subject :NSO    Class : Class 9

Post Your Answer

naman from PSBBM, Chennai
Subject :NSO    Class : Class 5

Ans 1:

Saswatayu Sengupta from Don Bosco Park Circus , Kolkata
Class : Class 7
A

Ans 2:

Aaditya Vichare from St. John's Universal School, Mumbai
Class : Class 10
Ans is 1 metre as 12/6 =2; 2/2=1

Ans 3:

Gauri Singh from St. John's School, Marhauli, Varanasi
Class : Class 10
a. 1 m

Ans 4:

Aaditya Vichare from St. John's Universal School, Mumbai
Class : Class 10
Ans is 1 metre as 12/6 =2; 2/2=1

Post Your Answer

Sohum Saha from DAV Model School Durgapur, Durgapur
Subject :NSO    Class : Class 7

Ans 1:

Nischay verma from The millennium school, Bathinda
Class : Class 8
Compressed natural gas and liquid petroleum gas

Ans 2:

Aditya Kamat from I V B D High School, Dhavali , Ponda- Goa
Class : Class 7
The full form of CNG & LPG is
  • CNG = Compressed natural gas
  • LPG = Liquified (or liquid) petrolium gas

    • Ans 3:

    Anurag bagal from DAV public school Airoli, Navi Mumbai
    Class : Class 7
    CNG-compressed natural gas LPG-liquidified petroleum gas

    Ans 4:

    abhinav from fitjee world school, Hyderabad
    Class : Class 8
    cng=compressed natural gas lpg=lquified petrolium gas

    Post Your Answer

    NEEL from carmel school, Kolkata
    Subject :NSO    Class : Class 2

    Ans 1:

    Krisha from Chaitanya, Gandhinagar
    Class : Class 2
    someone please explain this question

    Post Your Answer

    Pulkit Khanna from DELHI PUBLIC SCHOOL RUBY PARK KOLKATA, Kolkata
    Subject :NSO    Class : Class 7

    Ans 1:

    Dinesh Kumar Sharma from Navy Children School, Chanakyapuri, New Delhi, New Delhi
    Class : Class 7
    THE ANSWER IS B AS IN THE BURNING TEST BURNING PLASTIC MEANS THE YARN IS A SYNTHETIC FIBRE

    Post Your Answer