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Mannat Verma from Vivek High School , Chandigarh
Subject :NSO    Class : Class 5

Which of the following statements is incorrect?

A Precious metals like gold and platinum are used for making jewellery.
B Dentists use powdered pumice for polishing our teeth.
C Black gold is another name of granite.
D Shale is used to make tiles and bricks.


Ans 1:

Sanskriti Nagar from Rose Bud Academy, khagaria
Class : Class 5
c is the correct answer

Ans 2:

sankerths s from Shishya BELM public School, Bangalore
Class : Class 10

Ans 3:

AREEN from BOLTON, HYDERABAD
Class : Class 6
Ans is C because Black Gold is another name for coal.

Ans 4:

Pratham Dave from GNS, Bangalore
Class : Class 7
I prefer option C.

Ans 5:

Kaashvi Sharma from Bal Bharati Public School, GRHM, New Delhi
Class : Class 8

Ans 6:

Karthik Reddy Munnangi from Chirec International School, Hyderabad
Class : Class 8
I think it should be A as it says that option C is Black Gold is another name for granite, but Black Gold is another name for petroleum.

Ans 7:

Ybbn from Alphabet International School, Chennai
Class : Class 5
How is this the answer ?

Ans 8:

Maanvik Srivastava from Cornerstone, Hyderabad
Class : Class 5
THE CORRECT ANSWER IS C, BECAUSE BLACK GOLD IS ANOTHER NAME FOR CRUDE OIL OR PETROLEUM .

Ans 9:

sarah pranav gothivarekar from Indian School Al Gubra, Muscat
Class : Class 4
black gold is another name for petroleum or crude oil but according to SOF it is granite I think there is some error in this question from SOF

Ans 10:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Ans 6 is absolutely right. Ans is C.

Ans 11:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
In my case, I feel that (A)is a suitable answer. But the correct option is (C). Why?

Ans 12:

Siddhant Singhania from AGCS purulia, Puruliya
Class : Class 7

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