Page Number- 9

(1) सामान्यतः rainwater का pH क्या है??

  • A. 3.6
  • B. 12.5
  • C. 5.6
  • D. 1.6
0
(c) 5.6

(2) International standards के अनुसार पीने के पानी में nitrates की अधिकतम सीमा क्या है??

  • A. 50 ppb
  • B. 50 ppm
  • C. 55 ppb
  • D. 55 ppm
0
(b) 50 ppm

(3) निम्नलिखित में से कौन सी greenhouse gas है??

  • A. Dinitrogen
  • B. Oxgyen
  • C. Ozone
  • D. All
0
(c) Ozone

(4) निम्नलिखित में से कौन सी गैस global warming के लिए जिम्मेदार है??

  • A. O3
  • B. SO3
  • C. H2O
  • D. CO2
0
(d) CO2

(5) पीने के पानी में किस तत्व के कारण 'Blue baby' syndrome होता है??

  • A. Zinc
  • B. Copper
  • C. Sulphate
  • D. Nitrate
0
(d) Nitrate

(6) Acid rain में प्रमुख योगदानकर्ता (major contributor) कौन सा तत्व है??

  • A. SO2
  • B. O2
  • C. CO2
  • D. CO
0
(a) SO2
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