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Chemistry · PYQ NEET UG 2019(1)
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45 questions
Chemistry · PYQ NEET UG 2019(1)
In which case change in entropy is negative?
Read answer →Chemistry · PYQ NEET UG 2019(1)
Which of the following diatomic molecular species has only \( \pi \) bonds according to molecular orbital theory?
Read answer →Chemistry · PYQ NEET UG 2019(1)
Conjugate bases for Bronsted acids \( \text{H}_2\text{O} \) and \( \text{HF} \) are _________, respectively.
Read answer →Chemistry · PYQ NEET UG 2019(1)
PH of a saturated solution of \( \text{Ca(OH)}_2 \) is 9. The solubility product (\( K_{sp} \)) of \( \text{Ca(OH)}_2 \) is ______.
Read answer →Chemistry · PYQ NEET UG 2019(1)
What is the CORRECT electronic configuration of the central atom in \( \text{K}_4[\text{Fe(CN)}_6] \) based on crystal field theory?
Read answer →Chemistry · PYQ NEET UG 2019(1)
निम्नलिखित में से वह अभिक्रिया जो एक इलेक्ट्रोफिलिक प्रतिस्थापन के माध्यम से आगे बढ़ती है, वह है _________।
Read answer →Chemistry · PYQ NEET UG 2019(1)
Which will make basic buffer?
Read answer →Chemistry · PYQ NEET UG 2019(1)
The manganate and permanganate ions are tetrahedral, due to _________.
Read answer →Chemistry · PYQ NEET UG 2019(1)
निम्नलिखित अभिक्रिया में मध्यवर्ती A की संरचना है _________।
Read answer →Chemistry · PYQ NEET UG 2019(1)
Which one is malachite from the following?
Read answer →Chemistry · PYQ NEET UG 2019(1)
Match the following: \nColumn-I\ni. Pure nitrogen\nii. Haber's process\niii. Contact process\niv. Deacon's process \nColumn-II\na. Chlorine\nb. Sulphuric acid\nc. Ammonia\nd. Sodium azide or Barium azide
Read answer →Chemistry · PYQ NEET UG 2019(1)
Among the following, the one that is NOT a greenhouse gas is _________
Read answer →Chemistry · PYQ NEET UG 2019(1)
Match the xenon compounds in column-I with its structure in column-II and assign the CORRECT code: \nColumn-I\ni. \( \text{XeF}_4 \)\nii. \( \text{XeF}_6 \)\niii. \( \text{XeOF}_4 \)\niv. \( \text{XeO}_3 \) \nColumn-II\na. Pyramidal\nb. Square planar\nc. Distorted octahedral\nd. Square pyramidal
Read answer →Chemistry · PYQ NEET UG 2019(1)
An alkene 'A' on reaction with \( \text{O}_3 \) and \( \text{Zn-H}_2\text{O} \) gives propanone and ethanal in equimolar ratio. Addition of \( \text{HCl} \) to alkene 'A' gives 'B' as the major product. The structure of product 'B' is _________.
Read answer →Chemistry · PYQ NEET UG 2019(1)
The most suitable reagent for the following conversion is _________. \( \text{H}_3\text{C}-\text{C}\equiv\text{C}-\text{CH}_3 \longrightarrow \text{cis-2-Butene} \)
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The CORRECT order of the basic strength of methyl substituted amines in aqueous solution is ____.
Read answer →Chemistry · PYQ NEET UG 2019(1)
Which of the following is INCORRECT statement?
Read answer →Chemistry · PYQ NEET UG 2019(1)
निम्नलिखित अभिक्रिया का मुख्य उत्पाद ______ है। \n[थैलिक अम्ल की मजबूत तपन पर NH3 के साथ अभिक्रिया को दर्शाने वाला आरेख]
Read answer →Chemistry · PYQ NEET UG 2019(1)
Among the following, the narrow spectrum antibiotic is _________.
Read answer →Chemistry · PYQ NEET UG 2019(1)
