List of top Questions asked in TS EAMCET

Elements A and B form two non-volatile compounds (AB$_2$ and AB$_4$). When 1 g of AB$_2$ is added to 20 g of C$_6$H$_6$ (molar mass =78 gmol$^{-1}$) the freezing point of C$_6$H$_6$ is lowered by 2.3 K. When 1 g of AB$_4$ is added to 20 g of C$_6$H$_6$, the freezing point of C$_6$H$_6$ was lowered by 1.3 K. The atomic masses of A and B are respectively (K$_f$(C$_6$H$_6$)=5.1 K kg mol$^{-1}$)
What is the pH of 0.365% (w/V) HCl aqueous solution? (HCl=36.5 u), (log 0.365=−0.4377)
Identify the correct statements from the following
I. In CuSO$_4\cdot5$H$_2$O, only one molecule of H$_2$O is hydrogen bonded.
II. In BaCl$_2\cdot2$H$_2$O, water is in interstitial positions
III. In CrCl$_3\cdot6$H$_2$O, only three H$_2$O molecules form coordinate bonds with Cr$^{3+}$
Identify the correct statements
I. Lithium halides are somewhat covalent in nature
II. NaNO$_3$ on heating gives NO$_2$ gas
III. LiHCO$_3$ is a solid
IV. All alkali metals form ethynides on reaction with ethyne
Which of the following compounds are correctly matched with their uses?
The correct order of atomic radii of Al, Ga, In, Tl is
Which of the following set of Oxides is not correctly matched?
In long form of periodic table an element 'X' is present in group 'Y' in which Mn is also an element. X, Y respectively are
Identify the number of metalloids from the following: Sb, Be, P, Ge, Te, S, Cs, Tc, I
The pair of molecules having same number of lone pair of electrons on central atom is
Which of the following statement is not correct?
The slope of isobar of one mole of an ideal gas at p (atm) is 0.082 L K$^{-1}$. What is the value of p in atm? (R=0.082 L atm mol$^{-1}$K$^{-1}$)
The volume (in L) of CO2(g) obtained at STP by completely burning 10 g of 90% pure CaCO3 is approximately (molar volume of CO2 at STP=22.7L) (Assume CO2 as an ideal gas) (CaCO3=100u)
At T(K) 10 L of an ideal gas was expanded to 12 L against a pressure of 2 atm irreversibly. What is the work done by the gas?
If the mean life of a radioactive sample is 10 minutes, then the time (in minutes) taken for the activity of the radioactive sample to become $\mathrm{e}^{21}$ times its initial activity is
In a nuclear fusion reaction, if the mass defect is 0.25%, then the energy released in the fusion of 400 $\mu$g mass of a substance is
A Zener diode of breakdown voltage 6 V is connected as shown in the circuit. The power dissipated in the Zener diode is
Five logic gates are connected as shown in the figure. If the inputs are A=C=1 and B=D=0, then the values of y1 and y2 respectively are
The height of a television transmitting antenna is 70 m. If the receiving antenna is at the ground level, then the service area covered by the transmitting antenna is nearly (Radius of the earth = 6400 km)
In Hydrogen atom, an electron jumped from an orbit of radius 2592.1 pm to another orbit of radius 211.6 pm. What is the energy difference (in J) between these two states?
Observe the elements from H(Z=1) to Ca(Z=20). The number of elements with 1, 2 and 3 unpaired electrons in their ground state is respectively
A galvanometer of resistance 8 $\Omega$ gives full scale deflection for a current of 4 mA. The resistance to be connected in series to the galvanometer to convert it into a voltmeter to measure a maximum potential difference of 20 V is
If the magnetization of a bar magnet of area of cross-section 0.75 cm$^2$ and magnetic moment 2.7 Am$^2$ is $4 \times 10^5$ Am$^{-1}$, then the length of the magnet is
A wheel with 12 metallic spokes each 40 cm long is rotated with an angular speed of 15 rads$^{-1}$ in a plane normal to the horizontal component of earth's magnetic field. If the horizontal component of earth's magnetic field at the place is $4\times10^{-5}$ T, then the induced emf between the axle and the rim of the wheel is
A 132 V ac source is connected to a pure inductor of inductance 140 mH. If the frequency of the ac source is 50 Hz, then the current passing through the inductor is