National Science Olympiad Forum By SOF Olympiad Trainer - Page 889
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Ananya from Delhi Public School, Meerut
Subject :NSO    Class : Class 7

Ans 1:

ANMOL VERMA from NIRMALA CONVENT SENIOR SECONDARY SCHOOL KATHGODAM, Haldwani
Class : Class 9
-pH stands for potenz Hydrogen, pH value indicates whether the substance is acidic, basic of neutral. - pH less than 7 is acidic -pH greater than 7 is basic - pH equal to 7 is neutral ( neither acidic nor basic)

Ans 2:

riddhikaa from sri kumaran public school, Bengaluru
Class : Class 7
pH scale is a numerical representation of acidity and basicity of the substances. It varies from 1 to 14. The solutions with a pH value less than 7 are referred to as bases and those with a pH value of 7 are to as neutral.

Ans 3:

ANSH from DAYANAND PUBLIC SCHOOL, SHIMLA
Class : Class 8
ph is the negative logarithm of hydrogen ion.

Ans 4:

Julian Thomas Abraham from Madhava Kripa school , Manipal
Class : Class 8
pH is the negative logarithm of H+ ions. A substance having <7 pH is a Base A substance having >7 pH is an Acid Exact pH 7 is a neutral substance

Ans 5:

Manas Malla from Visakha Valley School, Visakhapatnam
Class : Class 8
pH value are the value used to determine wheather a solution is acid or basic in nature Acids= pH<7 Bases= pH>7 Neutral= pH=7

Post Your Answer

Sheetal from Dr. Pillai Global Academy, panvel
Subject :NSO    Class : Class 8

Ans 1:

Sheetal from Dr. Pillai Global Academy, panvel
Class : Class 8
pleaseeeeeee someone answer........

Ans 2:

B G Karshana from Vidhya Niketan Public School, Coimbatore, Coimbatore
Class : Class 9
by doing your best in the mock tests , I hope so..........

Ans 3:

Aishwarya Dwivedi from St. John's School, Marhauli, Varanasi
Class : Class 9
i too want the answer............

Ans 4:

Siddarth from MANAV RACHNA INTERNATIONAL SCHOOL, gurgoan
Class : Class 5
please answer officialy

Ans 5:

Rudra Prasadh Ganesh from Global Indian International School, Kuala Lumpur
Class : Class 7
You cant simply earn batches in your house, it is just an online thing. I am not sure now but it used to be by getting 5000 points

Post Your Answer

Pooja Gupta from Dunne's Institute, Mumbai
Subject :NSO    Class : Class 8

Ans 1:

Mayank Patel from Maharaja Agarsen Public School , Ghaziabad
Class : Class 8
yes,he is MAD!

Ans 2:

prateek datta banik from barasat mahatma gandhi memorial high school, barasat
Class : Class 8
ARE YOU MAD??????

Ans 3:

Aishwarya Dwivedi from St. John's School, Marhauli, Varanasi
Class : Class 9
NO WAY!!! How can you say that? Participate and get first rank. Then you'll see.

Ans 4:

Sheetal from Dr. Pillai Global Academy, panvel
Class : Class 8
nooo.how can you say so?

Ans 5:

Sumit from Dhanbad public school Hirak Branch, Dhanbad
Class : Class 9
Monkey what knows the flavour of ginger!!!!!!!!!

Ans 6:

Ronit Deshmukhya from U.P. Public School, Suri
Class : Class 8
have u ever participated ??

Ans 7:

Anidroid ,Aniruddha from Modern DPS, Faridabad
Class : Class 8
Everyone's so funny It depends on the olympiad!

Ans 8:

swayam agrawal from Udgam school for children, Ahmedabad
Class : Class 8
no

Ans 9:

ashhad from sri chaitanya techno school, Bengaluru
Class : Class 8
how can you say like that

Ans 10:

Gaurav Jha from Ambience Public School, New Delhi
Class : Class 8
are you mad? olympiad is the best exam to test your logical,subjective and objective skills

Ans 11:

Anidroid ,Aniruddha from Modern DPS, Faridabad
Class : Class 8

Ans 12:

B G Karshana from Vidhya Niketan Public School, Coimbatore, Coimbatore
Class : Class 9
nooooooooooooo,never

Ans 13:

tanish garg from G D goenka global school , hisar
Class : Class 9
are you crazy they enhance our knowledege

Post Your Answer

Pooja Gupta from Dunne's Institute, Mumbai
Subject :NSO    Class : Class 8

Ans 1:

Aishwarya Dwivedi from St. John's School, Marhauli, Varanasi
Class : Class 9
Thermosetting plastics are synthetic materials that strengthen during being heated, but may get damaged when being tried to molded again. Thermoplastics are different. They can be remelted back into liquids and can be remolded also. Ex for thermosetting: epoxy resin(m-seal), melamine, urea formaldehyde etc. Ex for thermoplastics: polythene, polypropylene, polystyrene etc.

Ans 2:

reenanagar35@gmail.com from St. Anselms School, Jaipur
Class : Class 8
Thermo plastics- Plastics which are obtained by gentle heating and then moulding and they can be moulded again and again by gentle heating. Thermosetting plastics- Plastics which are obtained by gentle heating and then moulding but they cannot be moulded again and again by heating .

Ans 3:

Gaurav Jha from Ambience Public School, New Delhi
Class : Class 8
they are the different types of plastic. Thermosetting plastics have a cross linked arrangement of monomers whereas thermoplasts have linear arrangement of monomers

Post Your Answer

ABHISHEK from DPS GREATER NOIDA, Greater Noida
Subject :NSO    Class : Class 6

Ans 1:

KRISHAV RASTOGI from ST PAUL SCHOOL, RAWATBHATA
Class : Class 9
I don't know

Post Your Answer

ABHISHEK from DPS GREATER NOIDA, Greater Noida
Subject :NSO    Class : Class 6

Post Your Answer

ABHISHEK from DPS GREATER NOIDA, Greater Noida
Subject :NSO    Class : Class 6

Ans 1:

Lakshya Garg from DMI, Meerut
Class : Class 6
Pulsars are the remains of a super giant star after the supernova. They are extremely bright even than super giant stars.

Ans 2:

SUBODH KUMAR from Delhi Public School, Bokaro
Class : Class 6
Pulsars are type of neutron star with high electromagnetic radiation and high speed rotation. They are so dense that singe spoon of their matter would wight 2 bn tonnes. Good question......

Post Your Answer

ABHISHEK from DPS GREATER NOIDA, Greater Noida
Subject :NSO    Class : Class 6

Ans 1:

Aaryan Maheshwari from MPS Jaipur, Jaipur
Class : Class 6
everything that you weannt to know about pulsars:- www.seasky.org/celestial-objects/pulsars.html

Post Your Answer

ABHISHEK from DPS GREATER NOIDA, Greater Noida
Subject :NSO    Class : Class 6

Post Your Answer

Aishwarya Dwivedi from St. John's School, Marhauli, Varanasi
Subject :NSO    Class : Class 8

Ans 1:

B G Karshana from Vidhya Niketan Public School, Coimbatore, Coimbatore
Class : Class 9
TVN

Ans 2:

affaan from AL-FALAH INTERNATIONAL SCHOOL DPS JEDDAH, jeddah,saudi arabia
Class : Class 8
it is TVN like sheetal explained its that method which makes this answer...

Ans 3:

Sheetal from Dr. Pillai Global Academy, panvel
Class : Class 8

Ans 4:

Aishwarya Dwivedi from St. John's School, Marhauli, Varanasi
Class : Class 9
Thanks!! It really helped me a lot. I really needed help in this ques. Thanks to those who posted the answer.

Ans 5:

Lovish garg from Academic Heights Public School, Lehragaga
Class : Class 8
ANSWER IS TVN

Ans 6:

reenanagar35@gmail.com from St. Anselms School, Jaipur
Class : Class 8
TVN

Ans 7:

Sheetal from Dr. Pillai Global Academy, panvel
Class : Class 8
TVN because if we see the difference between B and D ,it is C...similarly b/t J and M it is K L....next if we take P and K it is L M N O ....that shows the trend 1,2,4.....and it is the same with RSS and TVN. HOPE IT HELPED YOU.

Post Your Answer