National Science Olympiad Forum By SOF Olympiad Trainer - Page 51
  1. Home
  2. /  Forum

User Forum

Ask Your Question
ALICE from Delhi Public School, UDAIPUR
Subject :NSO    Class : Class 7

Ans 1:

ALICE from Delhi Public School, UDAIPUR
Class : Class 8
C

Post Your Answer

Venkatesan Ekambaram from NCFE, Bengaluru
Subject :NSO    Class : Class 9

Post Your Answer

Soham from Vibgyor high, Pune
Subject :NSO    Class : Class 8

Post Your Answer

kartick Somasundaram from san academy, chennai
Subject :NSO    Class : Class 7

Post Your Answer

Malav patel from Navrachana school sama , Vadodara
Subject :NSO    Class : Class 3

Post Your Answer

Meghatyoya from Adamas World School , Barasat
Subject :NSO    Class : Class 3

Post Your Answer

Gaurish Singla from DPS School Sector 19, Faridabad
Subject :NSO    Class : Class 8

Post Your Answer

Bivin Wilson from Suguna pips, Coimbatore
Subject :NSO    Class : Class 8

Read the following statements carefully.
W : I am very reactive and catch fire if exposed to air. To prevent this, I am stored in water.
X : I am a good conductor of heat and acquire a reddish-brown coating on exposure to moist air.
Y : I am soft and have dull appearance. I form acids on reacting with oxygen and water.
Z : I am malleable, ductile and acquire a dull green coating on exposure to moist air.
Identify W, X, Y and Z.

--------W---------------X-------------Y--------------Z
APhosphorus--Copper------Sulphur--------Iron
BPhosphorus--Iron----------Sulphur--------Copper
CSulphur------Iron-----------Phosphorus---Copper
DCopper------Phosphorus---Iron------------Sulphur


Post Your Answer

Shreyam Tripathy from Ann Mary School, Dehradun
Subject :NSO    Class : Class 8

Post Your Answer

Reyansh Singla from St. Joseph's Convent School, Bathinda
Subject :NSO    Class : Class 10

Post Your Answer