AIIMS Paramedical 2026 Question Paper: Download Answer Key with Solutions

Oxytocin and Vasopressin are secreted by:

• (A) Anterior pituitary
• (B) Posterior pituitary
• (C) Hypothalamus
• (D) Adrenal gland

The outer layer of Dicot root is called:

• (A) Epidermis
• (B) Endodermis
• (C) Pericycle
• (D) Cortex

The notch of kidney where vessels enter is called:

• (A) Hilum
• (B) Pelvis
• (C) Calyx
• (D) Ureter

Who is called the Father of Ecology in India?

• (A) Ramdeo Misra
• (B) S. P. Singh
• (C) Salim Ali
• (D) M. S. Swaminathan

Which animal was not Uricotelic?

• (A) Birds
• (B) Land snail
• (C) Reptiles
• (D) Adult Frog

Which bacteria converts nitrite to nitrate?

• (A) Nitrosomonas
• (B) Nitrobacter
• (C) Rhizobium
• (D) Azotobacter

What is the function of Tapetum?

• (A) Provides nourishment to pollen grains
• (B) Protects the ovule
• (C) Helps in fertilization
• (D) Produces pollen grains

Which of the following is NOT a stop codon?

• (A) UAA
• (B) UAG
• (C) UGA
• (D) AUG

How many bones are found in the forelimb?

• (A) 30
• (B) 32
• (C) 34
• (D) 36

The Environment Protection Act was launched in India in which year?

• (A) 1972
• (B) 1980
• (C) 1986
• (D) 1990

The bond order of \(Li_2\) is _______ and it is _______.

• (A) 1, diamagnetic
• (B) 2, paramagnetic
• (C) 1, paramagnetic
• (D) 2, diamagnetic

The oxidation state of Cr in \(K_2Cr_2O_7\) is:

• (A) +4
• (B) +5
• (C) +6
• (D) +7

The oxidation states of carbon in \(CH_4\) and \(CCl_4\) respectively are:

• (A) -4 and +4
• (B) +4 and -4
• (C) -4 and -4
• (D) +4 and +4

Which of the following statements is correct about \(Hg\)?

• (A) \(Hg\) is paramagnetic
• (B) \(Hg\) is diamagnetic
• (C) \(Hg\) is ferromagnetic
• (D) \(Hg\) has unpaired electrons

If \(32 g\) of methane reacts completely with oxygen, how much water is produced? (\(CH_4 = 16 g/mol\), \(H_2O = 18 g/mol\))

• (A) \(36 g\)
• (B) \(54 g\)
• (C) \(72 g\)
• (D) \(18 g\)

A spherical ball of radius r falls through a viscous liquid. If the radius is doubled, the terminal velocity becomes:

• (A) Same
• (B) 2 times
• (C) 4 times
• (D) 8 times

The linear mass density of a stretched string is \(\mu\) and tension is T. The wave velocity is:

• (A) \(\sqrt{T/\mu}\)
• (B) \(\sqrt{\mu/T}\)
• (C) \(T/\mu\)
• (D) \(\mu/T\)

The dimensional formula of magnetic field B is:

• (A) \([M^1 L^0 T^{-2} A^{-1}]\)
• (B) \([M^1 L^2 T^{-2} A^{-1}]\)
• (C) \([M^1 T^{-2} A^{-1}]\)
• (D) \([M^1 L^0 T^{-1} A^{-1}]\)

If the temperature of a black body is doubled, the wavelength of maximum emission:

• (A) Doubles
• (B) Halves
• (C) Becomes 4 times
• (D) Remains same

The correct increasing order of wavelength for UV, Visible light, and Microwaves is:

• (A) UV \(<\) Visible \(<\) Microwaves
• (B) Microwaves \(<\) Visible \(<\) UV
• (C) Visible \(<\) UV \(<\) Microwaves
• (D) UV \(<\) Microwaves \(<\) Visible