NEET 2021

184 Questions • 180 Minutes • 2021

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Twenty seven drops of same size are charged at 220 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop.

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In the product $\vec{F} = q(\vec{v} \times \vec{B}) = q\vec{v} \times (B\hat{i} + B\hat{j} + B_0\hat{k})$ For q = 1 and $\vec{v} = 2\hat{i} + 4\hat{j} + 6\hat{k}$ and $\vec{F} = 4\hat{i} - 20\hat{j} + 12\hat{k}$ What will be the complete expression for $\vec{B}$ ?

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A uniform conducting wire of length 12 a and resistance 'R' is wound up as a current carrying coil in the shape of, i. an equilateral triangle of side 'a'. ii. a square of side 'a'. The magnetic dipole moments of the coil in each case respectively are:

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Two conducting circular loops of radii $R_1$ and $R_2$ are placed in the same plane with their centres coinciding. If $R_1 >> R_2$, the mutual inductance M between them will be directly proportional to:

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A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?

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A series LCR circuit containing 5.0 H inductor, 80 μF capacitor and 40 Ω resistor is connected to 230 V variable frequency ac source. The angular frequencies of the source at which power transferred to the circuit is half the power at the resonant angular frequency are likely to be:

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Which of the following algae produce Carrageen?

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Genera like $Selaginella$ and $Salvinia$ produce two kinds of spores. Such plants are known as:

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Which of the following algae contains mannitol as reserve food material?

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Gemmae are present in:

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Diadelphous stamens are found in:

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Match List -1 with List - 2 [table] List-1 | List-2 ; A. Lenticels | (i) Phellogen ; B. Cork cambium | (ii) Suberin deposition ; C. Secondary cortex | (iii) Exchange of gases ; D. Cork | (iv) Phelloderm [/table] Choose the correct answer from the options given below.

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Match List - 1 with List - 2 [table] List-1 | List-2 ; A. Cells with active cell division capacity | (i) Vascular tissues ; B. Tissue having all cells similar in structure and function | (ii) Meristematic tissue ; C. Tissue having different types of cells | (iii) Sclereids ; D. Dead cells with highly thickened walls and narrow lumen | (iv) Simple Tissue [/table] Select the correct answer from the options given below.

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Which of the following is an incorrect statement?

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Match List- 1 with List- 2 [table] List-1 | List-2 ; A. Cristae | (i) Primary constriction in chromosome ; B. Thylakoids | (ii) Disc-shaped sacs in Golgi apparatus ; C. Centromere | (iii) Infoldings in mitochondria ; D. Cisternae | (iv) Flattened membranous sacs in stroma of plastids [/table] Choose the correct answer from the options given below.

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When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as:

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Which of the following are not secondary metabolites in plants?

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Which of the following stages of meiosis involves division of centromere?

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Match List -1 with List - 2 [table] List-1 | List-2 ; A. Cohesion | (i) More attraction in liquid phase ; B. Adhesion | (ii) Mutual attraction among water molecules ; C. Surface tension | (iii) Water loss in liquid phase ; D. Guttation | (iv) Attraction towards polar surfaces [/table] Choose the correct answer from the options given below.

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The first stable product of $CO_2$ fixation in sorghum is:

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Paper Info

Exam: NEET
Year: 2021
Questions: 184
Duration: 180 mins

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