SMATEE TEST SERIES 19 CHEMISTRY

1. The adsorbent used in adsorption chromatography is/are

(a) silica gel
(b) quick lime
(c) magnesia
(d) None of above

2. Example of Vinylic halide is

a)

b)

c)

d)

3. Tollen’s reagent and Fehling solutions are used to distinguish between.

a) Acid and Alcohol
b) Alkane and Alcohol
c) n-alkane and branched alkane
d) Ketones and Aldehydes

4. Which of the following gives yellow precipitate with I₂/NaOH.

a) CH₃CHCOCH₂CH₃
b) CH₃COOCOCH₃
c) CH₃CONH₂
d) CH₃CH(OH)CH₂CH₃

5. Which of the following compounds undergo aldol condensation?

(a) Formaldehyde
(b) Trichloroacetaldehyde
(c) Trimethylacetaldehyde
(d) Acetaldehyde

6. The product of Reimer-Tiemann reaction is a

(a) salicylaldehyde
(b) salicuclic acid
(c) hydroyamine
(d) nitroaldehyde

7. When phenol is treated with excess bromine water, it gives:

(a) m-bromophenol
(b) o- and p- bromophenol
(c) 2,4-dibromophenol
(d) 2,4,6-tribromophenol

8. Which of the following compounds will show metamerism?

(a) CH₃O-CH₃
(b) CH₃O-CH₂CH
(c) C₂H₅-S-C₂H₅
(d) CH₃CH₂CH₃

9. The IUPAC symbol for the element Dubnium is

(a) Uno
(b) Uue
(c) Unp
(d) Uns

10. Which of the following has maximum bond angle ?

(a) CO₂
(b) H₂O
(c) NH₃ 
 (d) PF₅

11. Match List 1 and List 2

         List 1                              List 2

        1) BrF₅                       i. Square Pyramidal
        2) NH₄⁺                    ii. Tetrahedral
        3) BF₃                       iii. Trigonal Bipyramidal
        4) SbCl₅                    iv. Trigonal Planar

a) 1 – i, 2- ii, 3- iii, 4- iv
b) 1- i, 2- ii, 3- iv, 4- iii
c) 1- iv, 2- iii, 3- ii, 4- i
d) 1-iii, 2- ii, 3- iv, 4- i

12. Choose the incorrect order among the following :

a) Li₂O < Na₂O < K₂O (Basicity)
b) Al₂O₃ < SiO₂ < P₂O₅ (Acidity)
c) B₂O₃ < Al₂O₃ < Ga₂O₃ < In₂O₃ (Acidity)
d) P₂O₅ > SO₃ > Cl₂O₇ (Basicity)

13. Which of the following is incorrect about Ionization enthalpy?

a) IE₁ of Be > IE₁ of B
b) IE₁ of Na < IE₁ of Mg
c) IE₂ of Mg > IE₂ of Al
d) IE₃ of Na < IE₃ of Mg

14. Which of the following represents the electronic configuration of the most electropositive element ?

(a) [Ne] 3s¹
(b) [Ne] 3s² 3p¹
(c) [Xe] 6s¹
(d) [Xe] 6s²

15. The natural occurring radioactive is

a) Uranium and Thorium
b) Uranium and Plutonium
c) Uranium and Neptunium
d) Thorium and Plutonium

16. An element ‘P’ has atomic number 19.What would be the formula of its oxide?

(a) X₂ O
(b) P₂O
(c) PX₃
(d) P₂X₃

17. Which one of the following is the correct order of size of the iodine species?

(a) I > I⁺> I^–
(b) I > I^– > I⁺
(c) I⁺ > I^– > I  
(d) I^– > I > I⁺

18. On which of the following factors, the rate constant does not depend?

(a) Temperature
(b) Concentration
(c) Presence of catalyst
(d) Nature of rea tants

19.  Units of rate constant for first and zero order reactions in terms of molarity (M) are respectively

(a) sec^-1, M sec^-1 
(b) sec^-1, M
(c) M sec^-1, sec^-1
(d) M, sec^-1

20. For a reaction, the activation energies of forward and reverse reactions are equal when

(a) ∆H = 0
(b) ∆S = 0
(c) the order is zero
(d) there is no catalyst.