Q.71
RPSC Agriculture Research Officer (Agriculture Chemistry) - 2022
MCQ (Single Correct) +1 −0.33

Which of the following is responsible for the green colour at the end point of the titration in organic carbon determination?

जैविक कार्बन की जाँच में अनुमापन में अन्तिम बिन्दु के रूप में हरा रंग किसकी वजह से होता है?
Q.72
RPSC Agriculture Research Officer (Agriculture Chemistry) - 2022
MCQ (Single Correct) +1 −0.33
If Na+ / (Cl- + SO4^2-) ratio is < 1 and pH of the saturated soil paste (pHs) is < 8.2, the soil is designated as -
यदि Na+ / (Cl- + SO4^2-) अनुपात < 1 तथा संतृप्त मृदा पेस्ट का pH (pHs) < 8.2 हो, तो मृदा कहलाती है -
Q.73
RPSC Agriculture Research Officer (Agriculture Chemistry) - 2022
MCQ (Single Correct) +1 −0.33
During the extraction of micronutrient cations by DTPA method (Lindsay and Norvell, 1978), how much TEA is protonated?
सूक्ष्म पोषक तत्वों के DTPA विधि द्वारा (लिन्डसे और नॉरवेल, 1978) निष्कर्षण में कितना TEA प्रोटोनेटेड होता है?
Q.74
RPSC Agriculture Research Officer (Agriculture Chemistry) - 2022
MCQ (Single Correct) +1 −0.33
In Kjeldahl digestion of soil for nitrogen determination, K2SO4 is used to -
जेल्डाल पाचन विधि द्वारा मृदा में नाइट्रोजन की जाँच में प्रयुक्त K2SO4 का उपयोग होता है -
Q.75
RPSC Agriculture Research Officer (Agriculture Chemistry) - 2022
MCQ (Single Correct) +1 −0.33
For district level planning by semi-detailed survey, the distance between field observations should be -
अर्द्ध विस्तृत सर्वेक्षण द्वारा जिला स्तरीय योजना बनाने के लिए क्षेत्र पर्यवेक्षण की दूरी रखनी चाहिए —

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