6,758 previous year Jharkhand Board (JAC) - Class 9 questions, grouped by year, with answers and solutions.
द्विघात समीकरण (Quadratic Equations): 'त्रिभुज' में यदि विविक्तकर $D = 0$ हो, तो मूलों की प्रकृति क्या होगी?
Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:
Assertion (A): Danger signals on communication towers and traffic posts are always illuminated in red color.
Reason (R): Red light has the longest wavelength in the visible spectrum and suffers minimum Rayleigh scattering ($I \propto 1/\lambda^4$) through fog and smoke.
जीव विज्ञान (मानव उत्सर्जन तंत्र): 'लोकतांत्रिक राजनीति: लोकतंत्र क्या? लोकतंत्र क्यों?, संविधान निर्माण, चुनावी राजनीति, संस्थाओं का कामकाज' में नेफ्रॉन द्वारा मूत्र निर्माण के तीन चरण कौन-से हैं?
Refer to the Case Study 'Case Study: Hazardous Enterprise and Supreme Court Doctrine of Absolute Liability' to answer:
What measure of financial compensation did the Supreme Court establish in the M.C. Mehta Oleum Gas case?
सांख्यिकी एवं प्रायिकता: 'यूक्लिड की ज्यामिति का परिचय' में आनुभविक संबंध क्या है?
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