List of top Questions asked in NEET (UG)

Given below are two statements:
Statement I: trans-But-2-ene upon treatment with $\text{Br}_2$ in $\text{CCl}_4$ gives the following product:
Statement II: cis-But-2-ene upon treatment with alkaline $\text{KMnO}_4$ gives the following product:
In the light of the above statements, choose the most appropriate answer from the options given below.
One of the products formed in the following reaction is
An ideal gas is made of polyatomic molecules. Each molecule has three translational, three rotational and \(f\) number of vibrational modes. If the ratio of heat capacities \[ \frac{C_P}{C_V}=\frac{8}{7} \] then the value of \(f\) is:
Consider a spring-mass simple harmonic oscillator in one dimension. The mass of the particle is \(m\) kg and the spring constant is \(k\) N m\(^{-1}\). At a given instant, the extension of the spring is \(x\) metre and the speed of the particle is \(v\) m s\(^{-1}\). On the \(x-v\) plane, if the graph of \(v\) as a function of \(x\) is a circle, then
Consider that \(\sigma_s\), \(k_B\), and \(b\) represent Stefan-Boltzmann constant, Boltzmann constant, and Wien's displacement law constant, respectively. The dimension of \(\sigma_s k_B^{-1} b\) is:
एक मोल एकपरमाणुक आदर्श गैस एक चक्रीय प्रक्रम से गुजरती है जैसा कि चित्र में दिखाया गया है। गैस को दी गयी (supplied) कुल ऊष्मा है :
स्पंज _______ द्वारा \(O_2\) और \(CO_2\) के साथ विनिमय करते हैं।
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: In an experiment, Mendel observed that the \(F_1\) progeny plants are all tall and none are dwarf.
Reason R: Stem height is a contrasting trait, with tall being dominant and dwarf being recessive.
In the light of the above statements, choose the most appropriate answer from the options given below:
The mean free path of molecules in an ideal gas A is half that of another ideal gas B. The diameter of the spherical molecules of gas A is twice the diameter of the molecules of gas B. If number densities of the gases A and B are \(n_A\) and \(n_B\), respectively, then
निम्नलिखित में से कौन सा जैव विकास का प्रमाण नहीं है?
A unit positive point charge is slowly moved through an infinitely thin tube inside a uniformly charged dielectric sphere of radius \(R\) and volume charge density \(\rho\). The initial and final positions of the charge are \(B\) and \(A\), located at distances \(3R\) and \(2R\) respectively from the centre. If the magnitude of work done on the charge is \[ \frac{\rho R^2}{n\varepsilon_0} \] then find \(n\).
The WBC count of a person's blood sample is 8000/cu.mm. How many eosinophils and lymphocytes would be in the same blood sample approximately ?
Which of the following is not evidence for evolution ?
The highest occupied molecular orbital for \(Ne_2\) is
A photon and an electron, each of \(10\,\text{eV}\) energy, move in free space. The ratio of linear momentum of electron \(P_e\) to that of photon \(P_{ph}\), \[ \frac{P_e}{P_{ph}} \] is :
एक अम्लीय माध्यम में, \(0.25M\) ऑक्सैलिक अम्ल के \(10mL\) का \(KMnO_4\) विलयन के साथ अनुमापन किया जाता है। यदि अंत बिंदु तक पहुँचने के लिए आवश्यक \(KMnO_4\) विलयन का आयतन \(10mL\) है, तो \(KMnO_4\) विलयन की सांद्रता है :
A thin horizontal disc is rotating about a vertical axis passing through its fixed centre \(O\). Its angular momentum is \(L_A\) and \(L_B\) computed about points \(A\) and \(B\), respectively, where \(OB=2\times OA\). The value of \[ \frac{L_A}{L_B} \] is:
The numbers \(17.0145\) and \(21.0235\) were rounded to three figures after the decimal point. The resulting numbers, respectively, are
Three identical capacitors \(P\), \(Q\) and \(S\), each of capacitance \(C\), are connected to a battery of voltage \(V\), as shown in the figure. If the potential energy stored in the capacitor \(P\) and total energy stored in the system are \(U_P\) and \(U_T\), respectively, then the ratio \[ \frac{U_P}{U_T} \] is:
Cell theory was formulated by ____________.
द्रव्यमान \(m\) का एक बॉब (गोलीय) \(B\) विराम अवस्था में है और जैसा कि चित्र में दिखाया गया है, 10 m लंबाई की एक द्रव्यमानरहित डोरी के माध्यम से छत से लम्बवत् लटका हुआ है। द्रव्यमान \(m\) का एक अन्य बिंदु द्रव्यमान \(A\), \(10\,ms^{-1}\) की चाल से चलते हुए इस पर पूर्णतः अप्रत्यास्थ टक्कर करता है। टक्कर के बाद बॉब (गोलीय) \(B\), \(h\) मीटर की ऊँचाई तक उठता है। गुरुत्वीय त्वरण \(g=10\,ms^{-2}\) है। \(h\) का मान है :

નીચેનામાંથી કયા દ્વિતીય (secondary) લસિકા અંગો છે?
(a) અસ્થિ મજ્જા (b) ટોન્સિલ્સ (c) સ્પ્લીન (d) થાઇમસ
નીચેના વિકલ્પોમાંથી સાચો વિકલ્પ પસંદ કરો:
નીચે બે વિધાનો આપેલ છે:
વિધાન I: ડાઉન સિન્ડ્રોમ એક X-ક્રોમોસોમની અનુપસ્થિતિને કારણે થાય છે.
વિધાન II: ટર્નર સિન્ડ્રોમ વધારાની ક્રોમોસોમની હાજરીને કારણે થાય છે.
ઉપરોક્ત વિધાનોના આલોકમાં, સાચો વિકલ્પ પસંદ કરો:
PCR દરમિયાન, પ્રાઇમર્સ DNA સ્ટ્રેન્ડ્સ સાથે __________ તબક્કામાં જોડાય છે.
સામાન્ય બાયલોબ્ડ (bilobed) એન્જિયોસ્પર્મ એન્થરના દરેક લોબમાં કેટલા થીકા (theca) હોય છે?