GSHSEB 10th Science and Tech Question Paper March 2012 Free Download
GSHSEB Class 10th Science and Tech Question Paper March 2012, GSHSEB Delhi Class 10th (X) March 2012 Science and Tech Question Paper GSHSEB Class X Science and Tech Question Paper March 2012 outside Delhi Students Free Download GSHSEB 10th – X Science and Tech Question Paper for Foreign Students with Answers and Solution March 2012 GSHSEB Board Exam Papers for Class 10 (X) std GSHSEB March 2012 Science and Tech Question Bank with Full Details.
Science and Tech
Time : 75 minutes
Maximum Marks : 50
1. Who invented the simple battery first?
(A) Faraday (B) Ohm
(C) Volta (D) Alva Edison
2. What is IUPAC name of Acetone?
(A) Propanal (B) Propanone
(C) Propanol (D) Propanoic acid
3. What is the diameter of nano-shells which are attached only to
(A) 400 nm (B) 200nm
(C) 100 nm (D) 50 nm
4. Which metal causes Minamata disease?
(A) Copper (B) Lead
(C) Manganese (D) Mercury
5. Give the name of theory proposed by Ernst Haeckel.
(A) Theory of germplasm (B) Theory of mutation
(C) Theory of recapitulation (D) Theory of natural selection
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