The most stable compound, among the following, is:
1. [Co(NH3)6]2(SO4)3
2. [Co(NH3)4(H2O)Br](NO3)2
3. [Co(NH3)3(NO3)3]
4. [CoCl2(en)2]NO3
Subtopic: Organometallic Complexes & their Uses |
68%
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NEET - 2023
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Subtopic: Ethers: Preparation & Properties, Uses |
74%
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NEET - 2023
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Which of the following statements is incorrect?
Choose the correct answer from the options given below:
| A. | All the transition metals except scandium form MO oxides which are ionic. |
| B. | The highest oxidation number corresponds to the group number in transition metal oxides is attained in Sc2O3 to Mn2O7. |
| C. | Basic character increases from V2O3 to V2O4 to V2O5. |
| D. | V2O4 dissolves in acids to give VO43-. |
| E. | CrO is basic, but Cr2O3 is amphoteric. |
| 1. | B and C only | 2. | A and E only |
| 3. | B and D only | 4. | C and D only |
Subtopic: d-Block Elements- Properties & Uses |
53%
From NCERT
NEET - 2023
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Consider the following compounds/species:
The number of compounds/species which obey Huckel's rule is:
| i. |  |
ii. |  |
| iii. |  |
iv. |  |
| v |  |
vi |  |
| vii |  |
| 1. | 5 | 2. | 4 |
| 3. | 6 | 4. | 2 |
Subtopic: Aromatic Hydrocarbons - Nomenclature, Isomerism & Huckel's Rule |
73%
From NCERT
NEET - 2023
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The reaction that does not take place in a blast furnace between 900 K to 1500 K temperature range during the extraction of iron is:
1. CaO + SiO2 → CaSiO3
2. Fe2O3 + CO → 2FeO + CO2
3. FeO + CO → Fe +CO2
4. C + CO2 → 2CO
1. CaO + SiO2 → CaSiO3
2. Fe2O3 + CO → 2FeO + CO2
3. FeO + CO → Fe +CO2
4. C + CO2 → 2CO
Subtopic: Metallurgy of individual elements |
From NCERT
NEET - 2023
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Which micronutrient is required for splitting of water molecule during photosynthesis?
| 1. | Copper | 2. | Manganese |
| 3. | Molybdenum | 4. | Magnesium |
Subtopic: Mineral Function |
59%
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NEET - 2023
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Unequivocal proof that DNA is the genetic material was first proposed by:
1. Wilkins and Franklin
2. Frederick Griffith
3. Alfred Hershey and Martha Chase
4. Avery, Macleod and McCarthy
1. Wilkins and Franklin
2. Frederick Griffith
3. Alfred Hershey and Martha Chase
4. Avery, Macleod and McCarthy
Subtopic: Search for Genetic Material |
81%
From NCERT
NEET - 2023
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Give below are two statements :
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
| Statement I: | Endarch and exarch are the terms often used for describing the position of secondary xylem in the plant body. |
| Statement II: | Exarch condition is the most common feature of the root system. |
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
Subtopic: Dicot Stem |
59%
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NEET - 2023
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Cellulose does not form blue colour with iodine because
| 1. | It breaks down when iodine reacts with it. |
| 2. | It is a disaccharide. |
| 3. | It is a helical molecule. |
| 4. | It does not contain complex helices and hence cannot hold iodine molecules. |
Subtopic: Carbohydrates: Cellulose, Chitin, Inulin & Agar |
86%
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NEET - 2023
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Family Fabaceae differs from Solanaceae and Liliaceae. With respect to the stamens, pick out the characteristics specific to family Fabaceae but not found in Solanaceae or Liliaceae.
| 1. | Epiphyllous and Dithecous anthers |
| 2. | Diadelphous and Dithecous anthers |
| 3. | Polyadelphous and epipetalous stamens |
| 4. | Monoadelphous and Monothecous anthers |
Subtopic: Families of Flowering Plant |
69%
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NEET - 2023
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