DSSSB PGT Chemistry Mock Test - 7 - DSSSB TGT/PGT/PRT MCQ

The boy in the photograph is the only son of the son of Suresh's mother i.e., the son of Suresh. Hence, Suresh is the father of boy.

L - 5 = G
M - 5 = H
N - 5 = I
O - 5 = J
LMNO → GHIJ

Similarly,
S - 5 = N
T - 5 = O
U - 5 = P
V - 5 = Q
STUV → NOPQ

1st term = 120
2nd term = 120-21 = 99
3rd term = 99-19 = 80
4th term = 80 - 17 = 63
5th term = 63 - 15 = 48

⇒ For every next term , preious term is substracteed in the order: -21, -19, -17, -15, -13,.....

So, missing term = 48 - 13 = 35

Let their investments be Rs. x for 14 months, Rs. y for 8 months and Rs. z for 7 months respectively.
Then, 14x : 8y : 7z = 5 : 7 : 8.
Now,

Let (17)^3.5 x (17)^x = 17⁸.

Then, (17)^{3.5 + x} = 17⁸.

∴ 3.5 + x = 8

⇒ x = (8 – 3.5)

⇒ x = 4.5

In 8 years, the interest earned = 200% Thus, per year interest rate = 200/8 = 25% To become 8 times we need a 700% increase 700/25 = 28 years.

‘घोसले में चिड़िया है’ वाक्य में अधिकरण कारक है क्योंकि इसमें विभक्ति चिन्ह 'में' प्रयोग हुआ है। भीतर, ऊपर, अंदर, बीच' आदि शब्दों का प्रयोग इस कारक में किया जाता है। 

जब किसी रचना या वाक्य आदि से वीरता जैसे स्थायी भाव की उत्पत्ति होती है, तो उसे वीर रस कहा जाता है। वीर रस का स्थायी भाव उत्साह होता है।

‘नेकी और पूछ-पूछ कर’ का अर्थ है- नेकी करने के पहले पूछने की जरूरत नहीं होती है।

• कैवल्य का अर्थ है – मोक्ष। 
• निर्वाण का अर्थ है- मोक्ष, मुक्ति।

'पाहुन ज्यों आए हों गाँव में शहर के' पंक्ति में उपमा अलंकार है। जहाँ किसी वस्तु या व्यक्ति की किसी अन्य वस्तु या व्यक्ति के समान गुण-धर्म के आधार पर तुलना की जाए या समानता बतायी जाए, वहाँ उपमा अलंकार होता है। प्रस्तुत उदाहरण में बादल की तुलना या समानता मेहमान से की गई है। इसलिए यहाँ उपमा अलंकार है।

A +2B → C

t = 0  5    8    0

t= ?  5x  8-2x  x

nx = 9a

x = 4
mole of C = 4 mole

In fcc, a total of 4 octahedral voids are present.
So, it contains 4 A and 4 B atoms but  all the particles along the plane as shown in the figure given in the question are removed.This plane contains 3/2 octahedral void atoms (1 at body center and 2 at edge center) and 3/2 lattice atoms (2 face centers and 4 corners).
So, the formula will be A3/2 B3/2 = AB.

(D)
When all particle along are body diagonal one removed, these 2 X atoms from corner are removed, one Y particle removed & 2 Z particle removed.
 
Hence new arrangement, X particle = 
Hence formula =  

From the sizes of octahedral and tetrahedral voids, it is clear that the atoms occupying these voids will not touch each other as we have along body diagonal of FCC.

The formula to calculate the energy is minus 13.6 multiply by z² divided by n².Here in second excited state n is equal to 3 and z for hydrogen is 1. So -13.6/9 = -1.51 ev

(a) Cr (24) = [Ar] 4s¹3d⁵ Correct
(b) K = 1s²2s²2 p⁶3s²3p⁶4s¹

(c) p-suborbit has three orbitals, each orbital can have maximum of two electrons thus, correct.
(d) s-suborbit has one orbital and this orbital can have maximum of two electrons thus, correct.

NaCl + HCl : Not the Buffer and Solution is acidic due to HCl.
⇒ pH < 7.

Catalyst only increases or decreases the activation energy of a reaction, It doesnot get used up in reaction.

Aggregation of colloidal particles into insoluble precipitate by addition of some suitable electrolyte is called coagulation.

Precipitation of AgCl is an example of instantaneous reaction.