NVS TGT/PGT PGT Physics Mock Test - 8 Free Online Test 2026

The correct answer is NaHCO3.

Key Points

• Chemically known as sodium bicarbonate, the formula of baking soda is NaHCO3.
• Baking soda is a white and crystalline salt that is made up of bicarbonate anion and sodium cation.

Additional Information

• Konark Sun Temple is a 13th-century CE (the year 1250) Sun temple at Konark about 35 kilometers (22 mi) northeast of Puri on the coastline of Odisha, India.
• The temple is attributed to King Narasimhadeva I of the Eastern Ganga dynasty about 1250 CE.
• Also called the Surya Devalaya, it is a classic illustration of the Odisha style of Architecture or Kalinga architecture.

• Konark temple was called the "Black Pagoda" in European sailor accounts as early as 1676 because it looked like a great-tiered tower that appeared black.
• Similarly, the Jagannath Temple in Puri was called the "White Pagoda".
• Both temples served as important landmarks for sailors in the Bay of Bengal.
• Declared a UNESCO World Heritage site in 1984, it remains a major pilgrimage site for Hindus, who gather here every year for the Chandrabhaga Mela around the month of February.

As per the given information;

Hence, Rima is in South direction from her starting point.

The logic follows here is:

Given code = (Positional value ÷ 2)3

Positional value of "V" = 22

22 ÷ 2 = 11

(11)3 = 1331

Positional value of "P" = 16 

16 ÷ 2 = 8

(8)3 = 512

Similarly,

Positional value of "J" = 10

10 ÷ 2 = 5

(5)3 = 125

Hence, the correct answer is "125".

By using the symbols in the table given below, we can draw the following family tree:

We do not know the gender of Shanti. 
Clearly, Shaurya is the cousin of Karan.
Hence, ‘Cousin’ is the correct answer.

Q, R, S, T, U, and V are seated in a straight line facing North.

i) S is second to the right of T.

ii) T is second to the right of Q.

iii) R is to the immediate left of Q

iv) R is to the immediate left of Q and is second to the left of V.

Thus we can see Q is sitting Fourth to the left of S.

Hence, the correct answer is "Option 4".

Refusing to help children unless they have tried themselves is the characteristic of an effective teacher.
It is better to try and fail than not try at all. A teacher must let the children try to do things and also to handle problems/situations in a controlled environment.

Instantaneous current i=2sin(100πt+π/3)A
At (t=0),  i(0)=2sin(π/3)=2×√3/2​​=√3​A
The current at the beginning will be √3​ A
 

Here we are using the formula
current = neAv ...............(1)
 where n= number of electron density
A =area of cross section
e= charge of electron
v=drift velocity
As both the wires are of the same materials then the electron density is the same for both.
For the first wire, current I is given by,  
I = neAv  
 Now according to the problem another wire of half the radius and of the same material when the drift velocity is 2v
Therefore for the second wire current is = ne(A/4)(2v)
                                                                = (neAv)/2
                                                          now putting I at this place
= I/2
 

We know that P=V²/R

For a given potential difference at a particular temperature

It is given that the powers of the bulbs are in the order 

100W > 60 W > 40W

Although eddy currents are undesirable, still they find applications in the following devices:

• Induction furnaces
• Electromagnetic damping
• Electric brakes
• Speedometers
• Induction motor
• Electromagnetic shielding
• Energy meters

Beyond the elastic limit, if still some force is applied to the body, at first the body deforms completely and when it can’t deform more, it starts to break into pieces. Now when the plastic range is small, on less extent of applied external force the body would break. And we know such objects are called brittle.

Pressure due to falling water level at 200mm is 
 P+ρgh=P_0​
or P=10⁵−(1000)(10)(0.2)=98×10³N/m2
 now, P₀​V₀​=PV
or 10⁵[A(0.5−H)]=98×10³[A(0.5−0.2)]    
where A= cross-sectional area of a vessel.
0.5−H=0.294 
⇒H=0.206m=206mm
 
The fall in height (in mm) of water level =206−200=6

 

The use of nuclear weapons would cause the formation of smoke clouds preventing the light from the sun reaching earth surface and it will also deplete the atmosphere and therefore stopping the greenhouse effect and thus doubling the cooling effect.
Hence the correct answer is option C.

Explanation:In order to take a safe turn, the cyclist has to bend a little from his vertical position. In this case, a component of the reaction provides the required centripetal force.If q is angle made by the cyclist with the vertical then

In actual practice, the value of q is slightly less because the force of friction also contributes towards the centripetal force.

Solution:

The work-energy theorem states that the work done by a net force is equal to the change in kinetic energy.

Given the velocity equation: v = b x^5/2, where b = 0.25 m^-3/2 s^-1.

From the work energy theorem,
Work done by net force = ΔK.E.

w = 16 J

Explanation:Vector addition is commutative, just like addition of real numbers. If you start from a point say P,  you end up at the same spot no matter which displacement (a or b) you take first. The head-to-tail rule yields vector c for both a + b and b + a.

At infinity, image of B will form at focus since it is at infinity. Image of A will be at A which can be calculated by mirror formula.
1/v​+(1/−u)​=(1/−f)
⟹v= fu /(f−u)​=−( fu/(u−f)​)
Image length = v−f=(fu/(u−f)​)−(f)

= f^2​/(u−f)
(We take the absolute values of the distances to calculate the rod length)

The fastest possible rate of rotation of a planet is that for which the gravitational force on material at the equator just barely provides the centripetal force needed for the rotation. Let M be the mass of the planet R its radius and m the mass of a particle on its surface. Then

Explanation:

Vector subtraction is defined in the following way.

• The difference of two vectors, A - B , is a vector C that is, C = A - B
• The addition of two vector such that C = A + (-B). B has been taken in opposite direction.

Thus vector subtraction can be represented as a vector addition.

Since the charges are unlike, the force will be attractive. Thus the force directs from 1C to -4C.

Lawrence Kohlberg, an American psychologist, has propounded the 'Theory of Moral Development'.

• He has made a systematic study of moral development in his theory that is categorized into 3 levels and 6 stages. 

The correct answer is 'who'. 'Who' is nominative and is used to refer to the subject. 'Whom' is objective and is used to refer to the object. The word 'whose' is possessive and is used to show belonging or association. The word 'which' is used for inanimate objects.
and in the given sentence you can see we are referring to a man who was on the continent so we are talking about the subject 
suppose the sentence is
The student, who  had lost miserably.
so in this we are talking about the student and not "you"
Example- This is Mr. Lee, who is the greatest martial art teacher of this era. But  Mr. Lee, whom you thought so highly of, has lost the fight.

'Back to square one' means to come back to the point where something was initially started.  Option 3 is thus absolutely correct.
Example- After the failure of the machine prototype, the team was back to square one.

• किसी भी बात पर अतिरिक्त भार देने के लिए जिन शब्दों का प्रयोग किया जाता है उसे निपात कहते है।
• जो अव्यय किसी शब्द के बाद लगकर उसके अर्थ को बल प्रदान करते हैं, वे निपात कहलाते हैं।
• निपात को अवधारक भी कहते हैं।
• निपात किसी बात पर जोर देने के लिए प्रयोग किये जाते हैं।

निपात के उदाहरण

• हमने ही यह कार्य पूरा किया है ।
• कल मेरा मित्र भी आएगा।

Additional Information

• बात अपने तक ही रखना।
• ही निपात है।
• तुम भी कल चले आओ।
• भी निपात है।
• शिक्षा केवल साधन है
• केवल निपात है।

सही उत्तर स्थानवाचक है।

Key Points

• रामलीला का मंचन वहाँ हो रहा हैI- वाक्य में स्थानवाचक क्रिया विशेषण हैI
• क्रिया-विशेषण शब्द- वहाँ
• क्रिया-विशेषण भेद- स्थानवाचक
• रामलीला का मंचन वहाँ हो रहा हैI
• उपर्युक्त उदाहरण में 'वहां' शब्द रामलीला का मंचन करने की क्रिया के स्थान का बोध करा रहा है।
  • अतः यह शब्द स्थानवाचक क्रियाविशेषण के अंतर्गत आएगा।
• स्थानवाचक क्रियाविशेषण वे शब्द होते हैं जो क्रिया के होने वाली जगह का बोध कराते हैं। यानी जहां क्रिया हो रही है उस जगह का बोध कराने वाले शब्द ही स्थानवाचक क्रियाविशेषण कहलाते हैं।
  • जैसे- यहाँ, वहाँ, कहाँ, जहाँ, तहाँ, सामने, नीचे, ऊपर, आगे, भीतर, बाहर, दूर, पास, अंदर, किधर, इस ओर, उस ओर, इधर, उधर, जिधर, दाएँ, बाएँ, दाहिने आदि सभी शब्द स्थानवाचक क्रियाविशेषण शब्द है।

Additional Information